Dr Stoichko Dimitrov
Senior Lecturer
Director of Postgraduate Taught Studies of SPCS
School of Physical and Chemical Sciences
Queen Mary University of London
Queen Mary University of London
Research
Laser spectroscopy, Printed solar cells, Perovskite photovoltaics, Organic photovoltaics, Photophysics, Semiconductors
Interests
Dimitrov's group uses laser and optical spectroscopies to develop new generation solar energy technologies and materials. One of our main areas of interest is printed perovskite solar cells. The group also studies the photophysical properties of organic and perovskite semiconductors and solar cells, looking for stability and performance enhancements.Publications
2025
Balancing PEDOT:PSS conductivity for optimal power output of p-n junction based ZnO piezoelectric nanogeneratorZhang Y, He Q, Tian G, Li X, Zeng C, Ren P, Abrahams I, Bilotti E, Dimitrov S, Sobrido AJ and Briscoe J
Journal of Alloys and Compounds, Elsevier vol. 1010, 177086-177086.
01-01-2025
2024
Scaling Up Perovskite Solar Cell Fabrication: Antisolvent‐Controlled Crystallization of Printed Perovskite SemiconductorLi X and Dimitrov SD
Solar Rrl, Wiley vol. 8 (16)
01-08-2024
Towards photoelectrochromic modulation of NIR absorption in plasmonic ITO using pentacene filmsMaho A, Kim DK, Wade J, Bryan E, Henrard L, Olivier Y, Dimitrov SD, Cloots R and Heutz S
Journal of Materials Chemistry C, Royal Society of Chemistry (Rsc) vol. 12 (45), 18308-18319.
01-01-2024
Photoelectrochemical activation of peroxymonosulfate using Sn-doped α-Fe2O3 thin film for degradation of anti-inflammatory pharmaceutical drugMachreki M, Tyuliev G, Žigon D, Guo Q, Chouki T, Sobrido ABJ, Dimitrov S and Emin S
Journal of Photochemistry and Photobiology a Chemistry, Elsevier vol. 446
01-01-2024
2023
Optimising the crystallization of lead-free Sn perovskite solar cells for slot-die coated devicesDimitrov S
Proceedings of the MATSUS Spring 2024 Conference.
18-12-2023
Scaling up slot-die coated perovskite solar cells by implementing in-situ optical analysis of the printing processDimitrov S and Li X
Proceedings of the International Conference on Hybrid and Organic Photovoltaics.
30-03-2023
Generating Long-Lived Triplet Excited States in Narrow Bandgap Conjugated PolymersMarin-Beloqui JM, Congrave DG, Toolan DTW, Montanaro S, Guo J, Wright IA, Clarke TM, Bronstein H and Dimitrov SD
Journal of The American Chemical Society, American Chemical Society (Acs) vol. 145 (6), 3507-3514.
03-02-2023
Single-Atom Iridium on Hematite Photoanodes for Solar Water Splitting: Catalyst or Spectator?Guo Q, Zhao Q, Crespo-Otero R, Di Tommaso D, Tang J, Dimitrov SD, Titirici MM, Li X and Jorge Sobrido AB
Journal of The American Chemical Society, American Chemical Society
11-01-2023
2021
Solution-Processable Carbon Nanotube Nanohybrids for Multiplexed Photoresponsive DevicesYe Q, Xu X, Paghi A, Bamford T, Horrocks BR, Houlton A, Barillaro G, Dimitrov S and Palma M
Advanced Functional Materials
08-08-2021
Triplet Generation Dynamics in Si- and Ge-Bridged Conjugated CopolymersHernández FJ, Fei Z, Osborne C, Crespo-Otero R, Heeney M and Dimitrov SD
The Journal of Physical Chemistry C: Energy Conversion and Storage, Optical and Electronic Devices, Interfaces, Nanomaterials, and Hard Matter, American Chemical Society
20-01-2021
2020
Multiphoton Absorption Stimulated Metal Chalcogenide Quantum Dot Solar Cells under Ambient and Concentrated IrradianceHou B, Kim BS, Lee HKH, Cho Y, Giraud P, Liu M, Zhang J, Davies ML, Durrant JR, Tsoi WC, Li Z, Dimitrov SD, Sohn JI, Cha SN and Kim JM
Advanced Functional Materials, Wiley
11-08-2020
Towards Efficient Integrated Perovskite/Organic Bulk Heterojunction Solar Cells: Interfacial Energetic Requirement to Reduce Charge Carrier Recombination LossesDaboczi M, Kim J, Lee J, Kang H, Hamilton I, Lin C, Dimitrov SD, McLachlan MA, Lee K and Durrant JR
Advanced Functional Materials, Wiley vol. 30 (25)
29-04-2020
Nitrogen-doped Carbon Dots/TiO2 Nanoparticle Composites for Photoelectrochemical Water OxidationLuo H, Dimitrov SD, Daboczi M, Kim J-S, Guo Q, Fang Y, Stoeckel M-A, Samorì P, Fenwick O, Jorge Sobrido A, Wang X and Titirici M-M
Acs Applied Nano Materials, American Chemical Society
20-03-2020
Investigating the Superoxide Formation and Stability in Mesoporous Carbon Perovskite Solar Cells with an Aminovaleric Acid AdditivePéan EV, De Castro CS, Dimitrov S, De Rossi F, Meroni S, Baker J, Watson T and Davies ML
Advanced Functional Materials, Wiley
07-02-2020
Interpreting time-resolved photoluminescence of perovskite materialsPéan EV, Dimitrov S, De Castro CS and Davies ML
Physical Chemistry Chemical Physics, Royal Society of Chemistry (Rsc) vol. 22 (48), 28345-28358.
01-01-2020
Pt single-atoms supported on nitrogen-doped carbon dots for highly efficient photocatalytic hydrogen generationLuo H, Liu Y, Dimitrov SD, Steier L, Guo S, Li X, Feng J, Xie F, Fang Y, Sapelkin A, Wang X and Titirici M-M
Journal of Materials Chemistry A, Royal Society of Chemistry (Rsc) vol. 8 (29), 14690-14696.
01-01-2020
2019
Cover Feature: Manipulating the Optical Properties of Carbon Dots by Fine‐Tuning their Structural Features (ChemSusChem 19/2019)Luo H, Papaioannou N, Salvadori E, Roessler MM, Ploenes G, van Eck ERH, Tanase LC, Feng J, Sun Y, Yang Y, Danaie M, Jorge AB, Sapelkin A, Durrant J, Dimitrov SD and Titirici M
Chemsuschem, Wiley vol. 12 (19), 4335-4335.
26-09-2019
Manipulating the optical properties of carbon dots via fine tuning their structural features.Luo H, Papaioannou N, Salvadori E, Roessler M, Ploenes G, van Eck ERH, Tanase L, Feng J, Sun Y, Yang Y, Danaie M, Sobrido ABJ, Sapelkin A, Durrant J, Dimitrov SD and Titirici M-M
Chemsuschem
10-09-2019
Toward improved environmental stability of polymer: Fullerene and polymer:Nonfullerene organic solar cells: A common energetic origin of light- A nd oxygen-induced degradationSpeller EM, Clarke AJ, Aristidou N, Wyatt MF, Francàs L, Fish G, Cha H, Lee HKH, Luke J, Wadsworth A, Evans AD, McCulloch I, Kim JS, Haque SA, Durrant JR, Dimitrov SD, Tsoi WC and Li Z
Acs Energy Letters, American Chemical Society vol. 4 (4), 846-852.
12-04-2019
Spectroscopic Investigation of the Effect of Microstructure and Energetic Offset on the Nature of Interfacial Charge Transfer States in Polymer: Fullerene BlendsDimitrov SD, Azzouzi M, Wu J, Yao J, Dong Y, Tuladhar PS, Schroeder BC, Bittner ER, McCulloch I, Nelson J and Durrant JR
Journal of The American Chemical Society, American Chemical Society vol. 141 (11), 4634-4643.
26-02-2019
Twist and Degrade—Impact of Molecular Structure on the Photostability of Nonfullerene Acceptors and Their Photovoltaic BlendsLuke J, Speller EM, Wadsworth A, Wyatt MF, Dimitrov S, Lee HKH, Li Z, Tsoi WC, McCulloch I, Bagnis D, Durrant JR and Kim J
Advanced Energy Materials, Wiley vol. 9 (15)
21-02-2019
2018
Excitation Wavelength-Dependent Internal Quantum Efficiencies in a P3HT/Nonfullerene Acceptor Solar CellTan C-H, Wadsworth A, Gasparini N, Wheeler S, Holliday S, Ashraf RS, Dimitrov SD, Baran D, McCulloch I and Durrant JR
The Journal of Physical Chemistry C, American Chemical Society (Acs) vol. 123 (10), 5826-5832.
24-12-2018
Understanding structure-activity relationships in linear polymer photocatalysts for hydrogen evolutionSachs M, Sprick RS, Pearce D, Hillman SAJ, Monti A, Guilbert AAY, Brownbill NJ, Dimitrov S, Shi X, Blanc F, Zwijnenburg MA, Nelson J, Durrant JR and Cooper AI
Nature Communications, Nature Research (Part of Springer Nature) vol. 9 (1)
23-11-2018
Excitation Density Dependent Photoluminescence Quenching and Charge Transfer Efficiencies in Hybrid Perovskite/Organic Semiconductor BilayersKim J, Godin R, Dimitrov SD, Du T, Bryant D, McLachlan MA and Durrant JR
Advanced Energy Materials, Wiley vol. 8 (35)
23-10-2018
2017
Influence of Blend Morphology and Energetics on Charge Separation and Recombination Dynamics in Organic Solar Cells Incorporating a Nonfullerene AcceptorCha H, Wheeler S, Holliday S, Dimitrov SD, Wadsworth A, Lee HH, Baran D, McCulloch I and Durrant JR
Advanced Functional Materials, Wiley vol. 28 (3)
27-11-2017
Exciton and Charge Generation in PC 60 BM Thin FilmsKeiderling C, Dimitrov S and Durrant JR
The Journal of Physical Chemistry C, American Chemical Society (Acs) vol. 121 (27), 14470-14475.
03-07-2017
Charge Separation in Intermixed Polymer:PCUtzat H, Dimitrov SD, Wheeler S, Collado-Fregoso E, Tuladhar PS, Schroeder BC, McCulloch I and Durrant JR
Journal of Physical Chemistry C vol. 121 (18), 9790-9801.
11-05-2017
2016
Photophysical Study of DPPTT‐T/PC70BM Blends and Solar Devices as a Function of Fullerene Loading: An Insight into EQE Limitations of DPP‐Based PolymersCollado‐Fregoso E, Deledalle F, Utzat H, Tuladhar PS, Dimitrov SD, Gillett A, Tan C, Zhang W, McCulloch I and Durrant JR
Advanced Functional Materials, Wiley vol. 27 (6)
27-12-2016
Reduced voltage losses yield 10% efficient fullerene free organic solar cells with >1 V open circuit voltages.Baran D, Kirchartz T, Wheeler S, Dimitrov S, Abdelsamie M, Gorman J, Ashraf RS, Holliday S, Wadsworth A, Gasparini N, Kaienburg P, Yan H, Amassian A, Brabec CJ, Durrant JR and McCulloch I
Energy and Environmental Science, Royal Society of Chemistry vol. 9 (12), 3783-3793.
01-12-2016
Indolo-naphthyridine-6,13-dione Thiophene Building Block for Conjugated Polymer Electronics: Molecular Origin of Ultrahigh n‑Type MobilityFallon KJ, Wijeyasinghe N, Manley EF, Dimitrov SD, Yousaf SA, Ashraf RS, Duffy W, Guilbert AAY, Freeman DME, Al-Hashimi M, Nelson J, Durrant JR, Chen LX, McCulloch I, Marks TJ, Clarke TM, Anthopoulos TD and Bronstein H
Chemistry of Materials, American Chemical Society (Acs) vol. 28 (22), 8366-8378.
07-11-2016
Charge 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
Transient absorption spectroscopy of ultra-low band gap polymers for organic electronic applicationsFallon KJ, Dimitrov S, Durrant J, Bronstein H and Clarke TM
Physical Chemistry of Interfaces and Nanomaterials XV. vol. 9923
26-09-2016
Effect of Systematically Tuning Conjugated Donor Polymer Lowest Unoccupied Molecular Orbital Levels via Cyano Substitution on Organic Photovoltaic Device PerformanceCasey A, Dimitrov SD, Shakya-Tuladhar P, Fei Z, Nguyen M, Han Y, Anthopoulos TD, Durrant JR and Heeney M
Chemistry of Materials, American Chemical Society (Acs) vol. 28 (14), 5110-5120.
15-07-2016
High-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
Thiazole Orange Dimers in DNA: Fluorescent Base Substitutions with Hybridization ReadoutBerndl S, Dimitrov SD, Menacher F, Fiebig T and Wagenknecht H
Chemistry - a European Journal, Wiley vol. 22 (7), 2386-2395.
15-01-2016
Singlet Exciton Lifetimes in Conjugated Polymer Films for Organic Solar CellsDimitrov SD, Schroeder BC, Nielsen CB, Bronstein H, Fei Z, McCulloch I, Heeney M and Durrant JR
Polymers, Mdpi vol. 8 (1)
13-01-2016
2015
Synthesis and Exciton Dynamics of Triplet Sensitized Conjugated PolymersAndernach R, Utzat H, Dimitrov SD, McCulloch I, Heeney M, Durrant JR and Bronstein H
Journal of The American Chemical Society, American Chemical Society (Acs) vol. 137 (32), 10383-10390.
07-08-2015
Polaron pair mediated triplet generation in polymer/fullerene blendsDimitrov SD, Wheeler S, Niedzialek D, Schroeder BC, Utzat H, Frost JM, Yao J, Gillett A, Tuladhar PS, McCulloch I, Nelson J and Durrant JR
Nature Communications, Springer Nature vol. 6 (1)
04-03-2015
Improved environmental stability of organic lead trihalide perovskite-based photoactive-layers in the presence of mesoporous TiO 2O'Mahony FTF, Lee YH, Jellett C, Dmitrov S, Bryant DTJ, Durrant JR, O'Regan BC, Graetzel M, Nazeeruddin MK and Haque SA
Journal of Materials Chemistry A, Royal Society of Chemistry (Rsc) vol. 3 (14), 7219-7223.
01-01-2015
2014
Performance and Stability of Lead Perovskite/TiO2, Polymer/PCBM, and Dye Sensitized Solar Cells at Light Intensities up to 70 SunsLaw C, Miseikis L, Dimitrov S, Shakya‐Tuladhar P, Li X, Barnes PRF, Durrant J and O'Regan BC
Advanced Materials, Wiley vol. 26 (36), 6268-6273.
04-08-2014
Towards optimisation of photocurrent from fullerene excitons in organic solar cellsDimitrov 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
Optimisation of diketopyrrolopyrrole:fullerene solar cell performance through control of polymer molecular weight and thermal annealingHuang Z, Fregoso EC, Dimitrov S, Tuladhar PS, Soon YW, Bronstein H, Meager I, Zhang W, McCulloch I and Durrant JR
Journal of Materials Chemistry A, Royal Society of Chemistry (Rsc) vol. 2 (45), 19282-19289.
01-01-2014
Charge generation and transport in efficient organic bulk heterojunction solar cells with a perylene acceptorShivanna R, Shoaee S, Dimitrov S, Kandappa SK, Rajaram S, Durrant JR and Narayan KS
Energy & Environmental Science, Royal Society of Chemistry (Rsc) vol. 7 (1), 435-441.
01-01-2014
2013
Charge Generation Dynamics in CdS:P3HT Blends for Hybrid Solar CellsCappel UB, Dowland SA, Reynolds LX, Dimitrov S and Haque SA
The Journal of Physical Chemistry Letters, American Chemical Society (Acs) vol. 4 (24), 4253-4257.
02-12-2013
Evidence for “Slow” Electron Injection in Commercially Relevant Dye-Sensitized Solar Cells by vis–NIR and IR Pump–Probe SpectroscopyJuozapavicius M, Kaucikas M, Dimitrov SD, Barnes PRF, van Thor JJ and O’Regan BC
The Journal of Physical Chemistry C, American Chemical Society (Acs) vol. 117 (48), 25317-25324.
20-11-2013
Isostructural, Deeper Highest Occupied Molecular Orbital Analogues of Poly(3-hexylthiophene) for High-Open Circuit Voltage Organic Solar CellsBronstein H, Hurhangee M, Fregoso EC, Beatrup D, Soon YW, Huang Z, Hadipour A, Tuladhar PS, Rossbauer S, Sohn E-H, Shoaee S, Dimitrov SD, Frost JM, Ashraf RS, Kirchartz T, Watkins SE, Song K, Anthopoulos T, Nelson J, Rand BP, et al.
Chemistry of Materials, American Chemical Society (Acs) vol. 25 (21), 4239-4249.
29-10-2013
Materials Design Considerations for Charge Generation in Organic Solar CellsDimitrov SD and Durrant JR
Chemistry of Materials, American Chemical Society (Acs) vol. 26 (1), 616-630.
01-10-2013
Thieno[3,2‐b]thiophene‐diketopyrrolopyrrole Containing Polymers for Inverted Solar Cells Devices with High Short Circuit CurrentsBronstein H, Collado‐Fregoso E, Hadipour A, Soon YW, Huang Z, Dimitrov SD, Ashraf RS, Rand BP, Watkins SE, Tuladhar PS, Meager I, Durrant JR and McCulloch I
Advanced Functional Materials, Wiley vol. 23 (45), 5647-5654.
17-06-2013
2012
Charge-Transfer State Dynamics Following Hole and Electron Transfer in Organic Photovoltaic DevicesBakulin 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
On the Energetic Dependence of Charge Separation in Low-Band-Gap Polymer/Fullerene BlendsDimitrov 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
2011
Efficient Charge Photogeneration by the Dissociation of PC70BM Excitons in Polymer/Fullerene Solar CellsDimitrov 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
2009
Femtosecond Probing of Optical Phonon Dynamics in Quantum-Confined CdTe NanocrystalsDimitrov SD, Dooley CJ, Trifonov AA and Fiebig T
The Journal of Physical Chemistry C, American Chemical Society (Acs) vol. 113 (10), 4198-4201.
12-02-2009
2008
Ultrafast Electron Transfer Dynamics in CdSe/CdTe Donor−Acceptor NanorodsDooley CJ, Dimitrov SD and Fiebig T
The Journal of Physical Chemistry C, American Chemical Society (Acs) vol. 112 (32), 12074-12076.
17-07-2008
Grants
Scalable Manufacturing of Single-Crystal Perovskite Optical and Electronic Devices: Follow-OnLei Su, Oliver Fenwick, Colin Crick and Stoichko Dimitrov
£941,955 EPSRC Engineering and Physical Sciences Research Council
01-03-2024 - 28-02-2027
Knowledge transfer partnerships (AKTP) with PowerrollStoichko Dimitrov
£35,000 Innovate UK
25-03-2024 - 24-07-2024
Next generation in-situ analysis for perovskite photovoltaic developmentStoichko Dimitrov
£451,011 EPSRC Engineering and Physical Sciences Research Council
14-04-2021 - 13-04-2024