Prof Christian Nielsen

Christian Nielsen

Professor of Materials Chemistry

School of Physical and Chemical Sciences
Queen Mary University of London
www.qmul.ac.uk/spcs/staff/academics/profiles/christiannielsen.html
Centre for Chemical Research
Centre for Experimental and Applied Physics
ORCID Google Scholar X

Research

organic electronics, organic bioelectronics, semiconducting polymers

Interests

Our main research focus is centred around the design and synthesis of new semiconducting materials for organic electronic and bioelectronic applications with the aim of elucidating important structure-property relations and providing new tailored materials to advance the understanding and performance of organic electronic and bioelectronic devices such as organic solar cells, field-effect transistors and biosensors.

Publications

solid heart iconPublications of specific relevance to the Centre for Experimental and Applied Physics

2024

bullet iconCation‐Dependent Mixed Ionic‐Electronic Transport in a Perylenediimide Small‐Molecule Semiconductor
Yu S, Wu H-Y, Lemaur V, Kousseff C, Beljonne D, Fabiano S and Nielsen C
Angewandte Chemie International Edition, Wiley, e202410626-e202410626.  
23-07-2024
bullet iconHigh Mobility Amorphous Polymer‐Based 3D Stacked Pseudo Logic Circuits through Precision Printing
Kim W, Ryu G, Nam Y, Choi H, Wang M, Kwon J, Nielsen CB, Kang K and Jung S
Advanced Functional Materials, Wiley 
01-05-2024
bullet iconConformational Analysis of Conjugated Organic Materials: What Are My Heteroatoms Really Doing?
Thorley KJ and Nielsen CB
Chempluschem, e202300773-e202300773.  
10-04-2024
bullet iconVersatile and recyclable double-network PVA/cellulose hydrogels for strain sensors and triboelectric nanogenerators under harsh conditions
Wang Y, Zhang Y, Ren P, Yu S, Cui P, Nielsen CB, Abrahams I, Briscoe J and Lu Y
Nano Energy, Elsevier, 109599-109599.  
01-04-2024
bullet iconSingle-Component Electroactive Polymer Architectures for Non-Enzymatic Glucose Sensing.
Kousseff CJ, Wustoni S, Silva RKS, Lifer A, Savva A, Frey GL, Inal S and Nielsen CB
Advanced Science, Wiley Open Access, e2308281-e2308281.  
23-03-2024
bullet iconSide chain engineering in indacenodithiophene- co -benzothiadiazole and its impact on mixed ionic–electronic transport properties
Holzer I, Lemaur V, Wang M, Wu H-Y, Zhang L, Marcial-Hernandez R, Gilhooly-Finn P, Cavassin P, Hoyas S, Meli D, Wu R, Paulsen BD, Strzalka J, Liscio A, Rivnay J, Sirringhaus H, Banerji N, Beljonne D, Fabiano S and Nielsen CB
Journal of Materials Chemistry C, Royal Society of Chemistry (Rsc) 
12-02-2024

2023

bullet iconQuantum modelling of multi-directional fused-ring electron acceptors for organic photovoltaics
Abid Z, Ali L, Shahid M, Nielsen CB, Altaf M, Min J and Ashraf RS
Journal of Physics and Chemistry of Solids, Elsevier, 111837-111837.  
13-12-2023
bullet iconPeculiar transient behaviors of organic electrochemical transistors governed by ion injection directionality
Kim JH, Halaksa R, Jo I-Y, Ahn H, Gilhooly-Finn PA, Lee I, Park S, Nielsen CB and Yoon M-H
Nature Communications, Springer Nature vol. 14 (1) 
28-11-2023
bullet iconQuinoxaline derivatives as attractive electron-transporting materials
Abid Z, Ali L, Gulzar S, Wahad F, Ashraf RS and Nielsen CB
Beilstein Journal of Organic Chemistry, Beilstein Institut vol. 19 (1), 1694-1712.  
09-11-2023
bullet iconInterplay between Side Chain Density and Polymer Alignment: Two Competing Strategies for Enhancing the Thermoelectric Performance of P3HT Analogues
Gilhooly-Finn PA, Jacobs IE, Bardagot O, Zaffar Y, Lemaire A, Guchait S, Zhang L, Freeley M, Neal W, Richard F, Palma M, Banerji N, Sirringhaus H, Brinkmann M and Nielsen CB
Chemistry of Materials, American Chemical Society (Acs) 
26-10-2023
bullet iconFrom Molecular to Nanoscale Control of Organic Semiconductors for Biosensing Applications
Nielsen CB
2023 IEEE Nanotechnology Materials and Devices Conference (NMDC). vol. 00, 541-542.  
25-10-2023
bullet iconSustainability Consolidated Ln3+(Ce3+-Pr3+-Nd3+):SnO2 System for Variegated Electrochemical and Photovoltaic Applications
Jaffri SB, Ahmad KS, Abrahams I, Kousseff CJ, Nielsen CB and Ibrahim SM
Advanced Sustainable Systems vol. 7 (9) 
01-09-2023
bullet iconTechnology Development of High-Performance Printed Organic Thin-Film Transistors
Kim W, Kang K, Nielsen CB and Jung S
2023 IEEE International Flexible Electronics Technology Conference (IFETC). vol. 00, 01-03.  
16-08-2023
bullet iconSustainability considerations for organic electronic products
McCulloch I, Chabinyc M, Brabec C, Nielsen CB and Watkins SE
Nature Materials, Nature Research 
19-06-2023
bullet iconThe Influence of Regiochemistry on the Performance of Organic Mixed Ionic and Electronic Conductors.
Halaksa R, Kim JH, Thorley KJ, Gilhooly-Finn PA, Ahn H, Savva A, Yoon M-H and Nielsen CB
Angew Chem Int Ed Engl, e202304390-e202304390.  
19-05-2023
bullet iconThe Influence of Regiochemistry on the Performance of Organic Mixed Ionic and Electronic Conductors
Halaksa R, Kim JH, Thorley K, Gilhooly-Finn P, Ahn H, Savva A, Yoon M-H and Nielsen C
Angewandte Chemie 
19-05-2023
bullet iconRare earth (Sm/Eu/Tm) doped ZrO2 driven electro-catalysis, energy storage, and scaffolding in high-performance perovskite solar cells
Jaffri SB, Ahmad KS, Abrahams I, Kousseff CJ, Nielsen CB and Almutairi BO
International Journal of Hydrogen Energy, Elsevier 
27-04-2023
bullet iconAqueous processing of organic semiconductors enabled by stable nanoparticles with built-in surfactants.
Marcial-Hernandez R, Giacalone S, Neal WG, Lee C-S, Gilhooly-Finn PA, Mastroianni G, Meli D, Wu R, Rivnay J, Palma M and Nielsen CB
Nanoscale, Royal Society of Chemistry 
17-03-2023
bullet iconHighly Efficient Mixed Conduction in a Fused Oligomer n-Type Organic Semiconductor Enabled by Three-Dimensional Transport Pathways.
Duan J, Zhu G, Chen J, Zhang C, Zhu X, Liao H, Li Z, Hu H, McCulloch I, Nielsen CB and Yue W
Advanced Materials, Wiley, e2300252-e2300252.  
14-03-2023
bullet iconn-Type semiconductors for organic electrochemical transistor applications
Yu S, Kousseff CJ and Nielsen CB
Synthetic Metals vol. 293 
01-03-2023

2022

bullet iconStructural Dynamics of Polymer:Non-Fullerene Organic Solar Cell Blends: A Neutron Spectroscopy Perspective
Zbiri M, Gilhooly-Finn PA, Fouquet P, Nielsen CB and Guilbert AAY
Chemistry of Materials, American Chemical Society 
18-08-2022
bullet iconRole of oxygen within end group substituents on film morphology and charge carrier transport in thiophene/phenylene small-molecule semiconductors
Waliszewski W, Parr ZS, Michalska A, Halaksa R, Zajaczkowska H, Sleczkowski P, Neophytou M, Luszczynska B, Blom PWM, Nielsen CB, Marszalek T and Pisula W
Organic Electronics, Elsevier vol. 109 
10-08-2022
bullet iconCritical analysis of self-doping and water-soluble n-type organic semiconductors: structures and mechanisms
Cowen LM, Gilhooly-Finn PA, Giovannitti A, LeCroy G, Demetriou H, Neal W, Dong Y, Westwood M, Luong S, Fenwick O, Salleo A, Heutz S, Nielsen CB and Schroeder BC
Journal of Materials Chemistry C 
24-05-2022
bullet iconResolving the backbone tilt of crystalline poly(3-hexylthiophene) with resonant tender X-ray diffraction.
Freychet G, Chantler P, Huang Y, Tan WL, Zhernenkov M, Nayak N, Kumar A, Gilhooly-Finn PA, Nielsen CB, Thomsen L, Roychoudhury S, Sirringhaus H, Prendergast D and McNeill CR
Materials Horizons, Royal Society of Chemistry 
05-04-2022
bullet iconDrastic Enhancement of X-ray Scattering Contrast between Amorphous and Crystalline Phases of Poly(3-hexylthiophene) at the Sulfur K-Edge
Freychet G, Huang Y, Tan WL, Gilhooly-Finn PA, Nielsen CB, Sirringhaus H and McNeill CR
Acs Materials Letters, 764-769.  
25-03-2022
bullet iconFrom p- to n-Type Mixed Conduction in Isoindigo-Based Polymers through Molecular Design.
Parr ZS, Borges-González J, Rashid RB, Thorley KJ, Meli D, Paulsen BD, Strzalka J, Rivnay J and Nielsen CB
Adv Mater, e2107829-e2107829.  
24-01-2022

2021

bullet iconQuantitative Insights into the Adsorption Structure of Diindeno[1,2‑a;1′,2′‑c]fluorene-5,10,15-trione (Truxenone) on a Cu(111) Surface Using X‑ray Standing Waves
Duncan DA, Blowey PJ, Lee T-L, Allegretti F, Nielsen CB and Rochford LA
Acs Omega 
08-12-2021
bullet iconQuantitative Insights into the Adsorption Structure of Diindeno[1,2-a;1 ',2 '-c]fluorene-5,10,15-trione (Truxenone) on a Cu(111) Surface Using X-ray Standing Waves
Duncan DA, Blowey PJ, Lee T-L, Allegretti F, Nielsen CB and Rochford LA
Acs Omega 
08-12-2021
bullet iconAldol Polymerization to Construct Half-Fused Semiconducting Polymers
Guo Y, Yang X, Wang L, Duan J, Zhou Y, Nielsen CB, Yu Y, Yang J, Li Z, Yue W, Liu Y and McCulloch I
Macromolecules 
01-11-2021
bullet iconMixed Ionic and Electronic Conduction in Small-Molecule Semiconductors.
Kousseff CJ, Halaksa R, Parr ZS and Nielsen CB
Chemical Reviews, American Chemical Society 
07-09-2021
bullet iconHigh-Efficiency Ion-Exchange Doping of Conducting Polymers.
Jacobs IE, Lin Y, Huang Y, Ren X, Simatos D, Chen C, Tjhe D, Statz M, Lai L, Finn PA, Neal WG, D'Avino G, Lemaur V, Fratini S, Beljonne D, Strzalka J, Nielsen CB, Barlow S, Marder SR, McCulloch I, et al.
Adv Mater, e2102988-e2102988.  
21-08-2021
bullet iconControlling morphology, adhesion, and electrochromic behavior of PEDOT films through molecular design and processing
Kousseff CJ, Taifakou FE, Neal WG, Palma M and Nielsen CB
Journal of Polymer Science 
12-08-2021
bullet iconQuantitative insights into the phase behaviour and miscibility of a photovoltaic active layer from the perspective of neutron spectroscopy
Zbiri M, Finn PA, Nielsen CB and Guilbert AAY
Journal of Materials Chemistry C 
28-07-2021
bullet iconMulti length scale porosity as a playground for organic thermoelectric applications
Weinbach Q, Nielsen CB and Biniek L
Journal of Materials Chemistry C 
26-07-2021
bullet iconThermoelectric Materials: Current Status and Future Challenges
Finn PA, Asker C, Wan K, Bilotti E, Fenwick O and Nielsen CB
Frontiers in Electronic Materials vol. 1, 677845-677845.  
20-07-2021
bullet iconEffect of substituting non-polar chains with polar chains on the structural dynamics of small organic molecule and polymer semiconductors
Guilbert AAY, Parr ZS, Kreouzis T, Woods DJ, Sprick RS, Abrahams I, Nielsen CB and Zbiri M
Physical Chemistry Chemical Physics 
15-03-2021
bullet iconSolution processed donor-acceptor, poly(3-hexylthiophene): phenyl-C61-butyric acid methyl ester diodes for low voltage alpha particle detection
Taifakou FE, Ali M, Borowiec J, Liu X, Finn P, Nielsen C, Timis C, NOONEY T, Bevan A and Kreouzis T
Acs Applied Materials and Interfaces, American Chemical Society 
01-02-2021

2020

bullet iconEffect of polar side chains on neutral and p-doped polythiophene
Finn P, Jacobs IE, Armitage J, Wu R, Paulsen B, Freeley M, Palma M, Rivnay J, Sirringhaus H and Nielsen C
Journal of Materials Chemistry C 
19-10-2020
bullet iconConjugated molecules for colourimetric and fluorimetric sensing of sodium and potassium
Parr ZS and Nielsen CB
Materials Chemistry Frontiers 
25-06-2020
bullet iconSemiconducting Small Molecules as Active Materials for p-Type Accumulation Mode Organic Electrochemical Transistors
Parr ZS, Rashid RB, Paulsen BD, Poggi B, Tan E, Freeley M, Palma M, Abrahams I, Rivnay J and Nielsen CB
Advanced Electronic Materials 
15-05-2020
bullet iconThe role of chemical design in the performance of organic semiconductors
Bronstein H, Nielsen CB, Schroeder BC and McCulloch I
Nature Reviews Chemistry, Nature Research (Part of Springer Nature) 
03-01-2020

2019

bullet iconMapping Micro-Structural Dynamics up to the nanosecond of the Conjugated Polymer P3HT in the Solid State
Guilbert AAY, Zbiri M, Finn PA, Jenart M, Fouquet P, Cristiglio V, Frick B, Nelson J and Nielsen CB
Chemistry of Materials, American Chemical Society 
30-09-2019
bullet iconGlycolated Thiophene-Tetrafluorophenylene Copolymers for Bioelectronic Applications: Synthesis by Direct Heteroarylation Polymerisation
Parr ZS, Halaksa R, Finn PA, Rashid RB, Kovalenko A, Weiter M, Rivnay J, Krajčovič J and Nielsen CB
Chempluschem 
11-07-2019
bullet iconConjugated polymers for n- and p-type charge transport
Parr ZS, Guo Z and Nielsen CB
In Conjugated Polymers: Perspective, Theory, and New Materials 325-428.  
27-03-2019
bullet iconInvestigation of the thermoelectric response in conducting polymers doped by solid-state diffusion
Kang K, Schott S, Venkateshvaran D, Broch K, Schweicher G, Harkin D, Jellett C, Nielsen CB, McCulloch I and Sirringhaus H
Materials Today Physics vol. 8, 112-122.  
01-03-2019
bullet iconOrganic semiconductors for biological sensing
BORGES GONZALEZ J, KOUSSEFF CJ and NIELSEN CB
Journal of Materials Chemistry C, Royal Society of Chemistry 
08-01-2019

2018

bullet iconMixed conduction and doping processes in organic semiconductors
Nielsen C
ACS meeting. vol. 256 
19-08-2018
bullet iconPerformance Improvements in Conjugated Polymer Devices by Removal of Water-Induced Traps.
Nikolka M, Schweicher G, Armitage J, Nasrallah I, Jellett C, Guo Z, Hurhangee M, Sadhanala A, McCulloch I, Nielsen CB and Sirringhaus H
Adv Mater, e1801874-e1801874.  
18-07-2018
bullet iconRedox-Stability of Alkoxy-BDT Copolymers and their Use for Organic Bioelectronic Devices
Giovannitti A, Thorley KJ, Nielsen CB, Li J, Donahue MJ, Malliaras GG, Rivnay J and Mcculloch I
Advanced Functional Materials 
21-02-2018

2017

bullet iconTuning the effective spin-orbit coupling in molecular semiconductors.
Schott S, McNellis ER, Nielsen CB, Chen H-Y, Watanabe S, Tanaka H, McCulloch I, Takimiya K, Sinova J and Sirringhaus H
Nat Commun vol. 8, 15200-15200.  
11-05-2017
bullet iconHigh mobility, hole transport materials for highly efficient PEDOT:PSS replacement in inverted perovskite solar cells
Neophytou M, Griffiths J, Fraser J, Kirkus M, Chen H, Nielsen CB and McCulloch I
Journal of Materials Chemistry C vol. 5 (20), 4940-4945.  
24-04-2017
bullet iconSynthesis of Hetero-bifunctional, End-Capped Oligo-EDOT Derivatives.
Spicer CD, Booth MA, Mawad D, Armgarth A, Nielsen CB and Stevens MM
Chem vol. 2 (1), 125-138.  
12-01-2017
bullet iconHighly efficient perovskite solar cells with crosslinked PCBM interlayers
Qiu W, Bastos JP, Dasgupta S, Merckx T, Cardinaletti I, Jenart MVC, Nielsen CB, Gehlhaar R, Poortmans J, Heremans P, McCulloch I and Cheyns D
Journal of Materials Chemistry A vol. 5 (6), 2466-2472.  
09-01-2017

2016

bullet iconErratum: N-type organic electrochemical transistors with stability in water
Giovannitti A, Nielsen CB, Sbircea D-T, Inal S, Donahue M, Niazi MR, Hanifi DA, Amassian A, Malliaras GG, Rivnay J and McCulloch I
Nature Communications, Springer Nature vol. 7 (1) 
15-12-2016
bullet iconCharge generation in polymer:fullerene photovoltaic systems (Conference Presentation)
Vezie MS, Dimitrov SD, Schroeder BC, Nielsen CB, McCulloch I, Campoy-Quiles M, Durrant JR and Nelson J
SPIE Organic Photonics + Electronics., 99420z-99420z-1-99420z-99420z-1.  
07-11-2016
bullet iconControlling the mode of operation of organic transistors through side-chain engineering.
Giovannitti A, Sbircea D-T, Inal S, Nielsen CB, Bandiello E, Hanifi DA, Sessolo M, Malliaras GG, McCulloch I and Rivnay J
Proc Natl Acad Sci U S A vol. 113 (43), 12017-12022.  
10-10-2016
bullet iconN-type organic electrochemical transistors with stability in water.
Giovannitti A, Nielsen CB, Sbircea DT, Inal S, Donahue M, Niazi MR, Hanifi DA, Amassian A, Malliaras GG, Rivnay J and McCulloch I
Nature Communications, Nature Publishing Group: Nature Communications vol. 7 
07-10-2016
bullet iconEpitaxial Templating of C60 with a Molecular Monolayer.
Rochford LA, Jones TS and Nielsen CB
Journal of Physical Chemistry Letters, American Chemical Society vol. 7 (17), 3487-3490.  
19-08-2016
bullet iconNaphthacenodithiophene Based Polymers—New Members of the Acenodithiophene Family Exhibiting High Mobility and Power Conversion Efficiency
Knall AC, Ashraf RS, Nikolka M, Nielsen CB, Purushothaman B, Sadhanala A, Hurhangee M, Broch K, Harkin DJ, Novà k J, Neophytou M, Hayoz P, Sirringhaus H and McCulloch I
Advanced Functional Materials vol. 26 (38), 6961-6969.  
18-08-2016
bullet iconMolecular Design of Semiconducting Polymers for High-Performance Organic Electrochemical Transistors.
Nielsen CB, Giovannitti A, Sbircea D-T, Bandiello E, Niazi MR, Hanifi DA, Sessolo M, Amassian A, Malliaras GG, Rivnay J and McCulloch I
J Am Chem Soc vol. 138 (32), 10252-10259.  
22-07-2016
bullet iconThe effect of fluorination on the surface structure of truxenones
Rochford LA, Ramadan AJ, Holliday S, Jones TS and Nielsen CB
Rsc Advances, The Royal Society of Chemistry vol. 6 (71), 67315-67318.  
08-07-2016
bullet iconSecondary kinetic deuterium isotope effects. The CC cleavage of labeled tetramethylethylenediamine radical cations-Who gets to keep the electron?
Nielsen CB and Hammerum S
International Journal of Mass Spectrometry 
27-06-2016
bullet iconHigh-efficiency and air-stable P3HT-based polymer solar cells with a new non-fullerene acceptor.
Holliday S, Ashraf RS, Wadsworth A, Baran D, Yousaf SA, Nielsen CB, Tan CH, Dimitrov SD, Shang Z, Gasparini N, Alamoudi M, Laquai F, Brabec CJ, Salleo A, Durrant JR and McCulloch I
Nature Communications, Nature Publishing Group: Nature Communications vol. 7, 11585-11585.  
09-06-2016
bullet iconNew Insights into the Molecular Dynamics of P3HT:PCBM Bulk Heterojunction: A Time-of-Flight Quasi-Elastic Neutron Scattering Study.
Guilbert AA, Zbiri M, Jenart MV, Nielsen CB and Nelson J
Journal of Physical Chemistry Letters, American Chemical Society vol. 7 (12), 2252-2257.  
19-05-2016
bullet iconOrganic Photovoltaics: More than Ever, an Interdisciplinary Field
Biniek L and Nielsen CB
Polymers, Mdpi vol. 8 (3) 
02-03-2016
bullet iconSinglet Exciton Lifetimes in Conjugated Polymer Films for Organic Solar Cells
Dimitrov SD, Schroeder BC, Nielsen CB, Bronstein H, Fei Z, McCulloch I, Heeney M and Durrant JR
Polymers, Mdpi vol. 8 (1) 
13-01-2016
bullet iconOrganic/inorganic epitaxy: commensurate epitaxial growth of truxenone on Cu (111)
Ramadan AJ, Nielsen CB, Holliday S, Jones TS, McCulloch I and Rochford LA
Rsc Advances, Royal Society of Chemistry (Rsc) vol. 6 (21), 17125-17128.  
01-01-2016
bullet iconAzaisoindigo conjugated polymers for high performance n-type and ambipolar thin film transistor applications
Yue W, Nikolka M, Xiao M, Sadhanala A, Nielsen CB, White AJP, Chen H-Y, Onwubiko A, Sirringhaus H and McCulloch I
Journal of Materials Chemistry C, Royal Society of Chemistry (Rsc) vol. 4 (41), 9704-9710.  
01-01-2016

2015

bullet iconSodium and Potassium Ion Selective Conjugated Polymers for Optical Ion Detection in Solution and Solid State
Giovannitti A, Nielsen CB, Rivnay J, Kirkus M, Harkin DJ, White AJP, Sirringhaus H, Malliaras GG and McCulloch I
Advanced Functional Materials, Wiley vol. 26 (4), 514-523.  
16-12-2015
bullet iconNon-Fullerene Electron Acceptors for Use in Organic Solar Cells
Nielsen CB, Holliday S, Chen H-Y, Cryer SJ and McCulloch I
Accounts of Chemical Research, American Chemical Society (Acs) vol. 48 (11), 2803-2812.  
27-10-2015
bullet iconEffects of alkyl chain positioning on conjugated polymer microstructure and field-effect mobilities
Schroeder BC, Nielsen CB, Westacott P, Smith J, Rossbauer S, Anthopoulos TD, Stingelin N and McCulloch I
Mrs Communications, Springer Nature vol. 5 (3), 435-440.  
01-09-2015
bullet iconDithienosilolothiophene: A New Polyfused Donor for Organic Electronics
Schroeder BC, Kirkus M, Nielsen CB, Ashraf RS and McCulloch I
Macromolecules, American Chemical Society (Acs) vol. 48 (16), 5557-5562.  
13-08-2015
bullet iconA Thieno[3,2‐b][1]benzothiophene Isoindigo Building Block for Additive‐ and Annealing‐Free High‐Performance Polymer Solar Cells
Yue W, Ashraf RS, Nielsen CB, Collado-Fregoso E, Niazi MR, Yousaf SA, Kirkus M, Chen H-Y, Amassian A, Durrant JR and McCulloch I
Advanced Materials, Wiley vol. 27 (32), 4702-4707.  
14-07-2015
bullet iconEffect of Fluorination of 2,1,3-Benzothiadiazole
Nielsen CB, White AJP and McCulloch I
The Journal of Organic Chemistry, American Chemical Society (Acs) vol. 80 (10), 5045-5048.  
01-05-2015
bullet iconDual Function Additives: A Small Molecule Crosslinker for Enhanced Efficiency and Stability in Organic Solar Cells
Rumer JW, Ashraf RS, Eisenmenger ND, Huang Z, Meager I, Nielsen CB, Schroeder BC, Chabinyc ML and McCulloch I
Advanced Energy Materials, Wiley vol. 5 (9) 
11-02-2015
bullet iconChalcogenophene Comonomer Comparison in Small Band Gap Diketopyrrolopyrrole-Based Conjugated Polymers for High-Performing Field-Effect Transistors and Organic Solar Cells
Ashraf RS, Meager I, Nikolka M, Kirkus M, Planells M, Schroeder BC, Holliday S, Hurhangee M, Nielsen CB, Sirringhaus H and McCulloch I
Journal of The American Chemical Society, American Chemical Society (Acs) vol. 137 (3), 1314-1321.  
14-01-2015
bullet iconA Rhodanine Flanked Nonfullerene Acceptor for Solution-Processed Organic Photovoltaics
Holliday S, Ashraf RS, Nielsen CB, Kirkus M, Röhr JA, Tan C-H, Collado-Fregoso E, Knall A-C, Durrant JR, Nelson J and McCulloch I
Journal of The American Chemical Society, American Chemical Society (Acs) vol. 137 (2), 898-904.  
12-01-2015
bullet iconAn electron beam evaporated TiO 2 layer for high efficiency planar perovskite solar cells on flexible polyethylene terephthalate substrates
Qiu W, Paetzold UW, Gehlhaar R, Smirnov V, Boyen H-G, Tait JG, Conings B, Zhang W, Nielsen CB, McCulloch I, Froyen L, Heremans P and Cheyns D
Journal of Materials Chemistry A, Royal Society of Chemistry (Rsc) vol. 3 (45), 22824-22829.  
01-01-2015

2014

bullet icon2,1,3‐Benzothiadiazole‐5,6‐Dicarboxylic Imide – A Versatile Building Block for Additive‐ and Annealing‐Free Processing of Organic Solar Cells with Efficiencies Exceeding 8%
Nielsen CB, Ashraf RS, Treat ND, Schroeder BC, Donaghey JE, White AJP, Stingelin N and McCulloch I
Advanced Materials, Wiley vol. 27 (5), 948-953.  
15-12-2014
bullet iconThieno[3,2‐b]thiophene Flanked Isoindigo Polymers for High Performance Ambipolar OFET Applications
Meager I, Nikolka M, Schroeder BC, Nielsen CB, Planells M, Bronstein H, Rumer JW, James DI, Ashraf RS, Sadhanala A, Hayoz P, Flores J, Sirringhaus H and McCulloch I
Advanced Functional Materials, Wiley vol. 24 (45), 7109-7115.  
10-09-2014
bullet iconBis-lactam-based donor polymers for organic solar cells: Evolution by design
Rumer JW, Schroeder BC, Nielsen CB, Ashraf RS, Beatrup D, Bronstein H, Cryer SJ, Donaghey JE, Holliday S, Hurhangee M, James DI, Lim S, Meager I, Zhang W and McCulloch I
Thin Solid Films, Elsevier vol. 560, 82-85.  
01-06-2014
bullet iconBenzotrithiophene Copolymers: Influence of Molecular Packing and Energy Levels on Charge Carrier Mobility
Schroeder BC, Rossbauer S, Kline RJ, Biniek L, Watkins SE, Anthopoulos TD, McCulloch I and Nielsen CB
Macromolecules, American Chemical Society (Acs) vol. 47 (9), 2883-2890.  
15-04-2014
bullet iconTowards optimisation of photocurrent from fullerene excitons in organic solar cells
Dimitrov SD, Huang Z, Deledalle F, Nielsen CB, Schroeder BC, Ashraf RS, Shoaee S, McCulloch I and Durrant JR
Energy & Environmental Science, Royal Society of Chemistry (Rsc) vol. 7 (3), 1037-1043.  
01-01-2014
bullet iconElectron-deficient truxenone derivatives and their use in organic photovoltaics
Nielsen CB, Voroshazi E, Holliday S, Cnops K, Cheyns D and McCulloch I
Journal of Materials Chemistry A, Royal Society of Chemistry (Rsc) vol. 2 (31), 12348-12354.  
01-01-2014
bullet iconPower conversion efficiency enhancement in diketopyrrolopyrrole based solar cells through polymer fractionation
Meager I, Ashraf RS, Nielsen CB, Donaghey JE, Huang Z, Bronstein H, Durrant JR and McCulloch I
Journal of Materials Chemistry C, Royal Society of Chemistry (Rsc) vol. 2 (40), 8593-8598.  
01-01-2014

2013

bullet iconRecent advances in transistor performance of polythiophenes
Nielsen CB and McCulloch I
Progress in Polymer Science, Elsevier vol. 38 (12), 2053-2069.  
01-12-2013
bullet iconPost-Polymerization Ketalization for Improved Organic Photovoltaic Materials
Nielsen CB, Ashraf RS, Rossbauer S, Anthopoulos T and McCulloch I
Macromolecules, American Chemical Society (Acs) vol. 46 (19), 7727-7732.  
20-09-2013
bullet iconCorrection to “Improved Field-Effect Transistor Performance of a Benzotrithiophene Polymer through Ketal Cleavage in the Solid State”
Nielsen CB, Sohn E-H, Cho D-J, Schroeder BC, Smith J, Lee M, Anthopoulos TD, Song K and McCulloch I
Acs Applied Materials & Interfaces, American Chemical Society (Acs) vol. 5 (7), 2783-2783.  
26-03-2013
bullet iconInfluence of crystallinity and energetics on charge separation in polymer-inorganic nanocomposite films for solar cells.
Bansal N, Reynolds LX, MacLachlan A, Lutz T, Ashraf RS, Zhang W, Nielsen CB, McCulloch I, Rebois DG, Kirchartz T, Hill MS, Molloy KC, Nelson J and Haque SA
Sci Rep vol. 3, 1531-1531.  
25-03-2013
bullet iconImproved Field-Effect Transistor Performance of a Benzotrithiophene Polymer through Ketal Cleavage in the Solid State
Nielsen CB, Sohn E-H, Cho D-J, Schroeder BC, Smith J, Lee M, Anthopoulos TD, Song K and McCulloch I
Acs Applied Materials & Interfaces, American Chemical Society (Acs) vol. 5 (5), 1806-1810.  
19-02-2013
bullet iconFused Dithienogermolodithiophene Low Band Gap Polymers for High-Performance Organic Solar Cells without Processing Additives
Zhong H, Li Z, Deledalle F, Fregoso EC, Shahid M, Fei Z, Nielsen CB, Yaacobi-Gross N, Rossbauer S, Anthopoulos TD, Durrant JR and Heeney M
Journal of The American Chemical Society, American Chemical Society (Acs) vol. 135 (6), 2040-2043.  
01-02-2013
bullet iconNew Fused Bis-Thienobenzothienothiophene Copolymers and Their Use in Organic Solar Cells and Transistors
Biniek L, Schroeder BC, Donaghey JE, Yaacobi-Gross N, Ashraf RS, Soon YW, Nielsen CB, Durrant JR, Anthopoulos TD and McCulloch I
Macromolecules, American Chemical Society (Acs) vol. 46 (3), 727-735.  
31-01-2013
bullet iconEffect of Fluorination on the Properties of a Donor–Acceptor Copolymer for Use in Photovoltaic Cells and Transistors
Bronstein H, Frost JM, Hadipour A, Kim Y, Nielsen CB, Ashraf RS, Rand BP, Watkins S and McCulloch I
Chemistry of Materials, American Chemical Society (Acs) vol. 25 (3), 277-285.  
29-01-2013
bullet iconEfficient truxenone-based acceptors for organic photovoltaics
Nielsen CB, Voroshazi E, Holliday S, Cnops K, Rand BP and McCulloch I
Journal of Materials Chemistry A, Royal Society of Chemistry (Rsc) vol. 1 (1), 73-76.  
01-01-2013
bullet iconAlkyl side-chain branching point effects in thieno[3,4-c]pyrrole-4,6-dione copolymers
Rumer JW, Hor CKL, Meager I, Yau CP, Huang Z, Nielsen CB, Watkins SE, Bronstein H and McCulloch I
Journal of Organic Semiconductors, Taylor & Francis vol. 1 (1), 30-35.  
01-01-2013

2012

bullet iconCharge-Transfer State Dynamics Following Hole and Electron Transfer in Organic Photovoltaic Devices
Bakulin AA, Dimitrov SD, Rao A, Chow PCY, Nielsen CB, Schroeder BC, McCulloch I, Bakker HJ, Durrant JR and Friend RH
The Journal of Physical Chemistry Letters, American Chemical Society (Acs) vol. 4 (1), 209-215.  
26-12-2012
bullet iconOn the Energetic Dependence of Charge Separation in Low-Band-Gap Polymer/Fullerene Blends
Dimitrov SD, Bakulin AA, Nielsen CB, Schroeder BC, Du J, Bronstein H, McCulloch I, Friend RH and Durrant JR
Journal of The American Chemical Society, American Chemical Society (Acs) vol. 134 (44), 18189-18192.  
29-10-2012
bullet iconRecent Advances in the Development of Semiconducting DPP‐Containing Polymers for Transistor Applications
Nielsen CB, Turbiez M and McCulloch I
Advanced Materials, Wiley vol. 25 (13), 1859-1880.  
25-09-2012
bullet iconDesign of Semiconducting Indacenodithiophene Polymers for High Performance Transistors and Solar Cells
McCulloch I, Ashraf RS, Biniek L, Bronstein H, Combe C, Donaghey JE, James DI, Nielsen CB, Schroeder BC and Zhang W
Accounts of Chemical Research, American Chemical Society (Acs) vol. 45 (5), 714-722.  
26-01-2012
bullet iconA Systematic Approach to the Design Optimization of Light‐Absorbing Indenofluorene Polymers for Organic Photovoltaics
Kirkpatrick J, Nielsen CB, Zhang W, Bronstein H, Ashraf RS, Heeney M and McCulloch I
Advanced Energy Materials, Wiley vol. 2 (2), 260-265.  
09-01-2012
bullet iconRecent advances in high mobility donor–acceptor semiconducting polymers
Biniek L, Schroeder BC, Nielsen CB and McCulloch I
Journal of Materials Chemistry, Royal Society of Chemistry (Rsc) vol. 22 (30), 14803-14813.  
01-01-2012
bullet iconSynthesis of novel thieno[3,2- b ]thienobis(silolothiophene) based low bandgap polymers for organic photovoltaics
Schroeder BC, Ashraf RS, Thomas S, White AJP, Biniek L, Nielsen CB, Zhang W, Huang Z, Tuladhar PS, Watkins SE, Anthopoulos TD, Durrant JR and McCulloch I
Chemical Communications, Royal Society of Chemistry (Rsc) vol. 48 (62), 7699-7701.  
01-01-2012
bullet iconRandom benzotrithiophene-based donor–acceptor copolymers for efficient organic photovoltaic devices
Nielsen CB, Ashraf RS, Schroeder BC, D’Angelo P, Watkins SE, Song K, Anthopoulos TD and McCulloch I
Chemical Communications, Royal Society of Chemistry (Rsc) vol. 48 (47), 5832-5834.  
01-01-2012

2011

bullet iconEfficient Charge Photogeneration by the Dissociation of PC70BM Excitons in Polymer/Fullerene Solar Cells
Dimitrov SD, Nielsen CB, Shoaee S, Tuladhar PS, Du J, McCulloch I and Durrant JR
The Journal of Physical Chemistry Letters, American Chemical Society (Acs) vol. 3 (1), 140-144.  
22-12-2011
bullet iconBenzotrithiophene Co-polymers with High Charge Carrier Mobilities in Field-Effect Transistors
Schroeder BC, Nielsen CB, Kim YJ, Smith J, Huang Z, Durrant J, Watkins SE, Song K, Anthopoulos TD and McCulloch I
Chemistry of Materials, American Chemical Society (Acs) vol. 23 (17), 4025-4031.  
16-08-2011
bullet iconBenzotrithiophene - A Planar, Electron-Rich Building Block for Organic Semiconductors
Nielsen CB, Fraser JM, Schroeder BC, Du J, White AJP, Zhang W and McCulloch I
Organic Letters, American Chemical Society (Acs) vol. 13 (9), 2414-2417.  
05-04-2011
bullet iconInfluence of the Alkyl Mantle on the Self-Assembly of Phenylene−Thienylene-Based Oligomers
Mavrinskiy A, Nielsen CB, Reynolds JR, Müllen K and Pisula W
Chemistry of Materials, American Chemical Society (Acs) vol. 23 (7), 1939-1945.  
01-03-2011
bullet iconPyrroloindacenodithiophene containing polymers for organic field effect transistors and organic photovoltaics
Donaghey JE, Ashraf RS, Kim Y, Huang ZG, Nielsen CB, Zhang W, Schroeder B, Grenier CRG, Brown CT, D'Angelo P, Smith J, Watkins S, Song K, Anthopoulos TD, Durrant JR, Williams CK and McCulloch I
Journal of Materials Chemistry, Royal Society of Chemistry (Rsc) vol. 21 (46), 18744-18752.  
01-01-2011
bullet iconA benzotrithiophene-based low band gap polymer for polymer solar cells with high open-circuit voltage
Nielsen CB, Schroeder BC, Hadipour A, Rand BP, Watkins SE and McCulloch I
Journal of Materials Chemistry, Royal Society of Chemistry (Rsc) vol. 21 (44), 17642-17645.  
01-01-2011

2009

bullet iconInfluence of side chain symmetry on the performance of poly(2,5-dialkoxy-p-phenylenevinylene): fullerene blend solar cells
Tuladhar SM, Sims M, Choulis SA, Nielsen CB, George WN, Steinke JHG, Bradley DDC and Nelson J
Organic Electronics, Elsevier vol. 10 (4), 562-567.  
01-07-2009
bullet iconInfluence of alkyl chain length on charge transport in symmetrically substituted poly(2,5-dialkoxy-p-phenylenevinylene) polymers
Tuladhar SM, Sims M, Kirkpatrick J, Maher RC, Chatten AJ, Bradley DDC, Nelson J, Etchegoin PG, Nielsen CB, Massiot P, George WN and Steinke JHG
Physical Review B, American Physical Society (Aps) vol. 79 (3) 
08-01-2009

2008

bullet iconDiscrete Photopatternable π-Conjugated Oligomers for Electrochromic Devices
Nielsen CB, Angerhofer A, Abboud KA and Reynolds JR
Journal of The American Chemical Society, American Chemical Society (Acs) vol. 130 (30), 9734-9746.  
01-07-2008

2007

bullet iconCorrelation between microstructure and charge transport in poly(2,5-dimethoxy-p-phenylenevinylene) thin films
Sims M, Tuladhar SM, Nelson J, Maher RC, Campoy-Quiles M, Choulis SA, Mairy M, Bradley DDC, Etchegoin PG, Tregidgo C, Suhling K, Richards DR, Massiot P, Nielsen CB and Steinke JHG
Physical Review B, American Physical Society (Aps) vol. 76 (19) 
15-11-2007

2005

bullet iconStructure−Property Relations of Regiosymmetrical 3,4-Dioxy-Functionalized Polythiophenes
Nielsen CB and Bjørnholm T
Macromolecules, American Chemical Society (Acs) vol. 38 (25), 10379-10387.  
09-11-2005

2004

bullet iconNew Regiosymmetrical Dioxopyrrolo- and Dihydropyrrolo-Functionalized Polythiophenes
Nielsen CB and Bjørnholm T
Organic Letters, American Chemical Society (Acs) vol. 6 (19), 3381-3384.  
20-08-2004
bullet iconMacroscopic Alignment of Graphene Stacks by Langmuir−Blodgett Deposition of Amphiphilic Hexabenzocoronenes
Laursen BW, Nørgaard K, Reitzel N, Simonsen JB, Nielsen CB, Als-Nielsen J, Bjørnholm T, Sølling TI, Nielsen MM, Bunk O, Kjaer K, Tchebotareva N, Watson MD, Müllen K and Piris J
Langmuir, American Chemical Society (Acs) vol. 20 (10), 4139-4146.  
09-04-2004

Grants

solid heart iconGrants of specific relevance to the Centre for Experimental and Applied Physics
bullet iconSplit-site scholarship: Deepak Kumar INCN-2024-171
Christian Nielsen
£4,800 FCO Foreign & Commonwealth Office - GOV UK
16-09-2024 - 15-09-2025
bullet iconBioelectronic Sensors: From Synthesis to Device
Christian Nielsen and Dilara Gunturkun
£3,285 RSC The Royal Society of Chemistry
01-08-2024 - 31-07-2025
solid heart iconICONIC
Christian Nielsen
£462,723 EPSRC - EU Scheme
01-05-2024 - 30-04-2028
bullet iconDeliberate imperfection: topological design of defects within graphene
Christian Nielsen
£75,566 Leverhulme Trust
01-04-2024 - 31-03-2028
solid heart iconSequence-Defined Pi-Conjugated Materials - EPSRC CASE conversion
Christian Nielsen and Andrew Livingston
£62,500 CDT Cambridge Display Technology Limited
01-10-2023 - 31-03-2027

bullet iconMaking organic solar cell materials processable from water (Blair Hirst)
Christian Nielsen
£3,203 RSC The Royal Society of Chemistry
01-07-2024 - 31-08-2024
bullet iconNon-Fullerene Acceptors: Scholarship Mr Zeeshan Abid
Christian Nielsen
£1,750 HEC Pakistan Higher Education Commission, Pakistan
03-01-2022 - 02-12-2022
bullet iconImplantable organic bio-electronics for long-term stable neural recording and stimulation
Christian Nielsen and Jorge Borges Gonzalez
£9,560 MRC Medical Research Council
01-04-2019 - 30-06-2022
solid heart iconAdditive-Stabilized Polymer Electronics Manufacturing
Christian Nielsen
£223,856 EPSRC Engineering and Physical Sciences Research Council
01-07-2018 - 31-12-2021
bullet iconOrganic Bioelectronic Sensors for Epilepsy Diagnosis
Christian Nielsen
£99,924 AMS Academy of Medical Sciences
01-09-2017 - 29-02-2020
bullet iconA new materials platform for organic bioelectronic sensors
Christian Nielsen
£15,000 Royal Society
15-08-2017 - 14-08-2018
solid heart iconCentre for Advanced Materials
William Gillin and Christian Nielsen
£157,625 EPSRC Engineering and Physical Sciences Research Council
01-12-2016 - 30-11-2022