Imperial College London

ProfessorJamesDurrant

Faculty of Natural SciencesDepartment of Chemistry

Professor of Photochemistry
 
 
 
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Contact

 

+44 (0)20 7594 5321j.durrant Website

 
 
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Assistant

 

Miss Lisa Benbow +44 (0)20 7594 5883

 
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Location

 

134aChemistrySouth Kensington Campus

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Summary

 

Publications

Publication Type
Year
to

502 results found

Selim S, Francas L, Garcia-Tecedor M, Corby S, Blackman C, Gimenez S, Durrant JR, Kafizas Aet al., 2019, WO3/BiVO4: impact of charge separation at the timescale of water oxidation, CHEMICAL SCIENCE, Vol: 10, Pages: 2643-2652, ISSN: 2041-6520

JOURNAL ARTICLE

Crake A, Christoforidis KC, Godin R, Moss B, Kafizas A, Zafeiratos S, Durrant JR, Petit Cet al., 2019, Titanium dioxide/carbon nitride nanosheet nanocomposites for gas phase CO2 photoreduction under UV-visible irradiation, APPLIED CATALYSIS B-ENVIRONMENTAL, Vol: 242, Pages: 369-378, ISSN: 0926-3373

JOURNAL ARTICLE

Luke J, Speller EM, Wadsworth A, Wyatt MF, Dimitrov S, Lee HKH, Li Z, Tsoi WC, McCulloch I, Bagnis D, Durrant JR, Kim J-Set al., 2019, Twist and Degrade-Impact of Molecular Structure on the Photostability of Nonfullerene Acceptors and Their Photovoltaic Blends, Advanced Energy Materials, Pages: 1803755-1803755, ISSN: 1614-6832

JOURNAL ARTICLE

Kafizas A, Xing X, Selim S, Mesa CA, Ma Y, Burgess C, McLachlan MA, Durrant JRet al., 2019, Ultra-thin Al2O3 coatings on BiVO4 photoanodes: Impact on performance and charge carrier dynamics, CATALYSIS TODAY, Vol: 321, Pages: 59-66, ISSN: 0920-5861

JOURNAL ARTICLE

Moss B, Hegner FS, Corby S, Selim S, Francas L, Lopez N, Gimenez S, Galan-Mascaros J-R, Durrant JRet al., 2019, Unraveling Charge Transfer in CoFe Prussian Blue Modified BiVO4 Photoanodes, ACS ENERGY LETTERS, Vol: 4, Pages: 337-342, ISSN: 2380-8195

JOURNAL ARTICLE

Limbu S, Pont S, Doust AB, Kwon S, Fuller P, Tan E, Durrant JR, Kim JSet al., 2019, Impact of Initial Bulk-Heterojunction Morphology on Operational Stability of Polymer:Fullerene Photovoltaic Cells, Advanced Materials Interfaces

© 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim Controlling initial bulk-heterojunction (BHJ) morphology of photoactive layer is critical for device efficiency of organic photovoltaic (OPV) cells. However, its impact on performance, specifically long-term operational stability is still poorly understood. This is mainly due to limitations in direct measurements enabling in situ monitoring of devices at a molecular level. Here, a thermal annealing preconditioning step is utilized to tune initial morphology of model polymer:fullerene BHJ OPV devices and molecular resonant vibrational spectroscopy to identify in situ degradation pathways. Direct spectroscopic evidence is reported for molecular-scale phase-segregation temperature (T PS ) which critically determines a boundary in high efficiency and long operational stability. Under operation, initially well-mixed blend morphology (no annealing) shows interface instability related to the hole-extracting layer via de-doping. Likewise, initially phase-segregated morphology at a molecular level (annealed above T PS ) shows instability in the photoactive layer via continuous phase-segregation between polymer and fullerenes in macroscales, coupled with further fullerene photodegradation. The results confirm that a thermal annealing preconditioning step is essential to stabilize the BHJ morphology; in particular annealing below T PS is critical for improved operational stability while maintaining high efficiency.

JOURNAL ARTICLE

Du T, Burgess CH, Lin C-T, Eisner F, Kim J, Xu S, Kang H, Durrant JR, McLachlan MAet al., 2018, Probing and Controlling Intragrain Crystallinity for Improved Low Temperature-Processed Perovskite Solar Cells, ADVANCED FUNCTIONAL MATERIALS, Vol: 28, ISSN: 1616-301X

JOURNAL ARTICLE

Kosco J, Sachs M, Godin R, Kirkus M, Francas L, Bidwell M, Qureshi M, Anjum D, Durrant JR, McCulloch Iet al., 2018, The Effect of Residual Palladium Catalyst Contamination on the Photocatalytic Hydrogen Evolution Activity of Conjugated Polymers, ADVANCED ENERGY MATERIALS, Vol: 8, ISSN: 1614-6832

JOURNAL ARTICLE

Kim J, Godin R, Dimitrov SD, Du T, Bryant D, McLachlan MA, Durrant JRet al., 2018, Excitation Density Dependent Photoluminescence Quenching and Charge Transfer Efficiencies in Hybrid Perovskite/Organic Semiconductor Bilayers, ADVANCED ENERGY MATERIALS, Vol: 8, ISSN: 1614-6832

JOURNAL ARTICLE

Corby S, Francas L, Selim S, Sachs M, Blackman C, Kafizas A, Durrant JRet al., 2018, Water Oxidation and Electron Extraction Kinetics in Nanostructured Tungsten Trioxide Photoanodes, JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, Vol: 140, Pages: 16168-16177, ISSN: 0002-7863

JOURNAL ARTICLE

Collado L, Reynal A, Fresno F, Barawi M, Escudero C, Perez-Dieste V, Coronado JM, Serrano DP, Durrant JR, de la Pena O'Shea VAet al., 2018, Unravelling the effect of charge dynamics at the plasmonic metal/semiconductor interface for CO2 photoreduction, NATURE COMMUNICATIONS, Vol: 9, ISSN: 2041-1723

JOURNAL ARTICLE

Sachs 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, Cooper AIet al., 2018, Understanding structure-activity relationships in linear polymer photocatalysts for hydrogen evolution, NATURE COMMUNICATIONS, Vol: 9, ISSN: 2041-1723

JOURNAL ARTICLE

Cha H, Tan C-H, Wu J, Dong Y, Zhang W, Chen H, Rajaram S, Narayan KS, McCulloch I, Durrant JRet al., 2018, An Analysis of the Factors Determining the Efficiency of Photocurrent Generation in Polymer:Nonfullerene Acceptor Solar Cells, ADVANCED ENERGY MATERIALS, Vol: 8, ISSN: 1614-6832

JOURNAL ARTICLE

Sorcar S, Thompson J, Hwang Y, Park YH, Majima T, Grimes CA, Durrant JR, In S-Iet al., 2018, High-rate solar-light photoconversion of CO2 to fuel: controllable transformation from C-1 to C-2 products, ENERGY & ENVIRONMENTAL SCIENCE, Vol: 11, Pages: 3183-3193, ISSN: 1754-5692

JOURNAL ARTICLE

Hong J, Sung MJ, Cha H, Park CE, Durrant JR, An TK, Kim Y-H, Kwon S-Ket al., 2018, Understanding Structure-Property Relationships in All-Small-Molecule Solar Cells Incorporating a Fullerene or Nonfullerene Acceptor, ACS APPLIED MATERIALS & INTERFACES, Vol: 10, Pages: 36037-36046, ISSN: 1944-8244

JOURNAL ARTICLE

Pont S, Foglia F, Higgins AM, Durrant JR, Cabral JTet al., 2018, Stability of Polymer:PCBM Thin Films under Competitive Illumination and Thermal Stress, ADVANCED FUNCTIONAL MATERIALS, Vol: 28, ISSN: 1616-301X

JOURNAL ARTICLE

Jin MH, Shin E, Jin S, Jo H, Ok KM, Hong J, Jun B-H, Durrant JRet al., 2018, Solvothermal Synthesis of Ferroelectric BaTiO3 Nanoparticles and Their Application to Dye-sensitized Solar Cells, JOURNAL OF THE KOREAN PHYSICAL SOCIETY, Vol: 73, Pages: 627-631, ISSN: 0374-4884

JOURNAL ARTICLE

Li M, Zhao C, Wang Z-K, Zhang C-C, Lee HKH, Pockett A, Barbe J, Tsoi WC, Yang Y-G, Carnie MJ, Gao X-Y, Yang W-X, Durrant JR, Liao L-S, Jain SMet al., 2018, Interface Modification by Ionic Liquid: A Promising Candidate for Indoor Light Harvesting and Stability Improvement of Planar Perovskite Solar Cells, ADVANCED ENERGY MATERIALS, Vol: 8, ISSN: 1614-6832

JOURNAL ARTICLE

Shoaee S, Durrant JR, 2018, Oxygen diffusion dynamics in organic semiconductor films (vol 3, pg 10079, 2015), JOURNAL OF MATERIALS CHEMISTRY C, Vol: 6, Pages: 8553-8554, ISSN: 2050-7526

JOURNAL ARTICLE

Du T, Kim J, Ngiam J, Xu S, Barnes PRF, Durrant JR, McLachlan MAet al., 2018, Elucidating the Origins of Subgap Tail States and Open-Circuit Voltage in Methylammonium Lead Triiodide Perovskite Solar Cells, ADVANCED FUNCTIONAL MATERIALS, Vol: 28, ISSN: 1616-301X

JOURNAL ARTICLE

Christoforidis KC, Syrgiannis Z, La Parola V, Montini T, Petit C, Stathatos E, Godin R, Durrant JR, Prato M, Fornasiero Pet al., 2018, Metal-free dual-phase full organic carbon nanotubes/g-C3N4 heteroarchitectures for photocatalytic hydrogen production, NANO ENERGY, Vol: 50, Pages: 468-478, ISSN: 2211-2855

JOURNAL ARTICLE

Lin C-T, Pont S, Kim J, Du T, Xu S, Li X, Bryant D, Mclachlan MA, Durrant JRet al., 2018, Passivation against oxygen and light induced degradation by the PCBM electron transport layer in planar perovskite solar cells, SUSTAINABLE ENERGY & FUELS, Vol: 2, Pages: 1686-1692, ISSN: 2398-4902

JOURNAL ARTICLE

Kasap H, Godin R, Jeay-Bizot C, Achilleos DS, Fang X, Durrant JR, Reisner Eet al., 2018, Interfacial Engineering of a Carbon Nitride-Graphene Oxide-Molecular Ni Catalyst Hybrid for Enhanced Photocatalytic Activity, ACS CATALYSIS, Vol: 8, Pages: 6914-6926, ISSN: 2155-5435

JOURNAL ARTICLE

Lee HKH, Durrant JR, Li Z, Tsoi WCet al., 2018, Stability study of thermal cycling on organic solar cells, JOURNAL OF MATERIALS RESEARCH, Vol: 33, Pages: 1902-1908, ISSN: 0884-2914

JOURNAL ARTICLE

Jain SM, Phuyal D, Davies ML, Li M, Philippe B, De Castro C, Qiu Z, Kim J, Watson T, Tsoi WC, Karis O, Rensmo H, Boschloo G, Edvinsson T, Durrant JRet al., 2018, An effective approach of vapour assisted morphological tailoring for reducing metal defect sites in lead-free, (CH3NH3)(3)Bi2I9 bismuth-based perovskite solar cells for improved performance and long-term stability, NANO ENERGY, Vol: 49, Pages: 614-624, ISSN: 2211-2855

JOURNAL ARTICLE

Francas L, Burns E, Steier L, Cha H, Sola-Hernandez L, Li X, Tuladhar PS, Bofill R, Garcia-Anton J, Sala X, Durrant JRet al., 2018, Rational design of a neutral pH functional and stable organic photocathode, CHEMICAL COMMUNICATIONS, Vol: 54, Pages: 5732-5735, ISSN: 1359-7345

JOURNAL ARTICLE

Hong DP, Thu TD, Kim J, Charbonneau C, Manzhos S, Feron K, Tsoi WC, Durrant JR, Jain SM, Sonar Pet al., 2018, Molecular Engineering Using an Anthanthrone Dye for Low-Cost Hole Transport Materials: A Strategy for Dopant-Free, High-Efficiency, and Stable Perovskite Solar Cells, ADVANCED ENERGY MATERIALS, Vol: 8, ISSN: 1614-6832

JOURNAL ARTICLE

Baran D, Gasparini N, Wadsworth A, Tan CH, Wehbe N, Song X, Hamid Z, Zhang W, Neophytou M, Kirchartz T, Brabec CJ, Durrant JR, McCulloch Iet al., 2018, Robust nonfullerene solar cells approaching unity external quantum efficiency enabled by suppression of geminate recombination, NATURE COMMUNICATIONS, Vol: 9, ISSN: 2041-1723

JOURNAL ARTICLE

Du T, Kim J, Ngiam J, Xu S, Barnes P, Durrant J, McLachlan MAet al., Elucidating the origins of sub-gap tail states and open-circuit voltage in methylammonium lead triiodide perovskite solar cells, Advanced Functional Materials, ISSN: 1616-301X

Recombination via sub-gap trap states is considered a limiting factor in the development of organometal halide perovskite solar cells. Here, we demonstrate the impact of active layer crystallinity on the accumulated charge and open-circuit voltage (Voc) in solar cells based on methylammonium lead triiodide (CH3NH3PbI3, MAPI). We show MAPI crystallinity can be systematically tailored by modulating the stoichiometry of the precursor mix, where small quantities of excess methylammonium iodide (MAI) improves crystallinity increasing device Voc by ~200 mV. Using in-situ differential charging and transient photovoltage measurements, charge density and charge carrier recombination lifetime are determined under operational conditions. Increased Voc is correlated to improved active layer crystallinity and a reduction in the density of trap states in MAPI. Photoluminescence spectroscopy shows that an increase in trap states correlates with faster carrier trapping and more non-radiative recombination pathways. We provide fundamental insights into the origin of Voc in perovskite photovoltaics and demonstrate why highly crystalline perovskite films are paramount for high-performance devices.

JOURNAL ARTICLE

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