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Dr Jay Patel


Postdoctoral Research Fellow
Clarendon Laboratory Room 245
Phone (office): +44 (0) 1865 272339
Phone (lab): +44 (0) 1865 282649
Email: jay.patel@physics.ox.ac.uk

Research interests

Metal halide perovskite semiconductors.

Publications

  1. Contrasting charge-carrier dynamics across key metal-halide perovskite compositions through in situ simultaneous probes,
    AM Ulatowski, KA Elmestekawy, JB Patel, NK Noel, SY Yan, H Kraus, PG Huggard, MB Johnston, LM Herz
    Adv. Funct. Mater., 33:2305283 (2023) [ abstract | pdf | doi:10.1002/adfm.202305283 ]
  2. A templating approach to controlling the growth of coevaporated halide perovskites,
    SY Yan, JB Patel, JE Lee, KA Elmestekawy, SR Ratnasingham, QM Yuan, LM Herz, NK Noel, MB Johnston
    ACS Energy Lett., 8:4008–4015 (2023) [ abstract | pdf | doi:10.1021/acsenergylett.3c01368 ]
  3. Solvent-Free Method for Defect Reduction and Improved Performance of {p-i-n} Vapor-Deposited Perovskite Solar Cells,
    KB Lohmann, SG Motti, RDJ Oliver, AJ Ramadan, HC Sansom, QM Yuan, KA Elmestekawy, JB Patel, JM Ball, LM Herz, HJ Snaith, MB Johnston
    ACS Energy Lett., 7:1903-1911 (2022) [ abstract | pdf | doi:10.1021/acsenergylett.2c00865 ]
  4. Phase segregation in mixed-halide perovskites affects charge-carrier dynamics while preserving mobility,
    SG Motti, JB Patel, RDJ Oliver, HJ Snaith, MB Johnston, LM Herz
    Nat. Commun., 12:6955 (2021) [ abstract | pdf | doi:10.1038/s41467-021-26930-4 ]
  5. Ultrafast photo-induced phonon hardening due to pauli blocking in {MAPbI}$_3$ single-crystal and polycrystalline perovskites,
    CQ Xia, S Ponce, JL Peng, AM Ulatowski, JB Patel, AD Wright, RL Milot, H Kraus, QQ Lin, LM Herz, F Giustino, MB Johnston
    J. Phys-Mater., 4:044017 (2021) [ abstract | pdf | doi:10.1088/2515-7639/ac22b9 ]
  6. Limits to electrical mobility in lead-halide perovskite semiconductors,
    CQ Xia, JL Peng, S Ponce, JB Patel, AD Wright, TW Crothers, MU Rothmann, J Borchert, RL Milot, H Kraus, QQ Lin, F Giustino, LM Herz, MB Johnston
    J. Phys. Chem. Lett., 12:3607-3617 (2021) [ abstract | pdf | doi:10.1021/acs.jpclett.1c00619 ]
  7. Halide segregation in mixed-halide perovskites: influence of a-site cations,
    AJ Knight, J Borchert, RDJ Oliver, JB Patel, PG Radaelli, HJ Snaith, MB Johnston, LM Herz
    ACS Energy Lett., 6:799-808 (2021) [ abstract | pdf | doi:10.1021/acsenergylett.0c02475 ]
  8. Efficient energy transfer mitigates parasitic light absorption in molecular charge-extraction layers for perovskite solar cells,
    HJ Eggimann, JB Patel, MB Johnston, LM Herz
    Nat. Commun., 11:5525 (2020) [ abstract | pdf | doi:10.1038/s41467-020-19268-w ]
  9. Metal composition influences optoelectronic quality in mixed-metal lead-tin triiodide perovskite solar absorbers,
    MT Klug, RL Milot, JB Patel, T Green, HC Sansom, MD Farrar, AJ Ramadan, S Martani, ZP Wang, B Wenger, JM Ball, L Langshaw, A Petrozza, MB Johnston, LM Herz, HJ Snaith
    Energy Environ. Sci., 13:1776-1787 (2020) [ abstract | pdf | doi:10.1039/d0ee00132e ]
  10. Cspbbr3 nanocrystal films: deviations from bulk vibrational and optoelectronic properties,
    SG Motti, F Krieg, AJ Ramadan, JB Patel, HJ Snaith, MV Kovalenko, MB Johnston, LM Herz
    Adv. Funct. Mater., 30:1909904 (2020) [ abstract | pdf | doi:10.1002/adfm.201909904 ]
  11. Control over Crystal Size in Vapor Deposited Metal-Halide Perovskite Films,
    KB Lohmann, JB Patel, MU Rothmann, CQ Xia, RDJ Oliver, LM Herz, HJ Snaith, MB Johnston
    ACS Energy Lett., 5:710-717 (2020) [ abstract | pdf | doi:10.1021/acsenergylett.0c00183 ]
  12. Light absorption and recycling in hybrid metal halide perovskite photovoltaic devices,
    JB Patel, AD Wright, KB Lohmann, K Peng, CQ Xia, JM Ball, NK Noel, TW Crothers, J Wong-leung, HJ Snaith, LM Herz, MB Johnston
    Adv. Energy Mater., 10:1903653 (2020) [ abstract | pdf | doi:10.1002/aenm.201903653 ]
  13. Trap states, electric fields, and phase segregation in mixed-halide perovskite photovoltaic devices,
    AJ Knight, JB Patel, HJ Snaith, MB Johnston, LM Herz
    Adv. Energy Mater., 10:1903488 (2020) [ abstract | pdf | doi:10.1002/aenm.201903488 ]
  14. Charge-carrier dynamics, mobilities, and diffusion lengths of 2d-3d hybrid butylammonium-cesium-formamidinium lead halide perovskites,
    LRV Buizza, TW Crothers, ZP Wang, JB Patel, RL Milot, HJ Snaith, MB Johnston, LM Herz
    Adv. Funct. Mater., 29:1902656 (2019) [ abstract | pdf | doi:10.1002/adfm.201902656 ]
  15. Effect of ultraviolet radiation on organic photovoltaic materials and devices,
    JB Patel, P Tiwana, N Seidler, GE Morse, OR Lozman, MB Johnston, LM Herz
    ACS Appl. Mater. Interfaces, 11:21543-21551 (2019) [ abstract | pdf | doi:10.1021/acsami.9b04828 ]
  16. Elucidating the long-range charge carrier mobility in metal halide perovskite thin films,
    J Lim, MT Horantner, N Sakai, JM Ball, S Mahesh, NK Noel, YH Lin, JB Patel, DP McMeekin, MB Johnston, B Wenger, HJ Snaith
    Energy Environ. Sci., 12:169-176 (2019) [ abstract | pdf | doi:10.1039/c8ee03395a ]
  17. Electronic traps and phase segregation in lead mixed-halide perovskite,
    AJ Knight, AD Wright, JB Patel, DP McMeekin, HJ Snaith, MB Johnston, LM Herz
    ACS Energy Lett., 4:75-84 (2019) [ abstract | pdf | doi:10.1021/acsenergylett.8b02002 ]
  18. Temperature-dependent refractive index of quartz at terahertz frequencies,
    CL Davies, JB Patel, CQ Xia, LM Herz, MB Johnston
    J. Infrared Millim. Terahertz Waves, 39:1236-1248 (2018) [ abstract | pdf | doi:10.1007/s10762-018-0538-7 ]
  19. Highly crystalline methylammonium lead tribromide perovskite films for efficient photovoltaic devices,
    NK Noel, B Wenger, SN Habisreutinger, JB Patel, T Crothers, ZP Wang, RJ Nicholas, MB Johnston, LM Herz, HJ Snaith
    ACS Energy Lett., 3:1233-1240 (2018) [ abstract | pdf | doi:10.1021/acsenergylett.8b00509 ]
  20. Bimolecular recombination in methylammonium lead triiodide perovskite is an inverse absorption process,
    CL Davies, MR Filip, JB Patel, TW Crothers, C Verdi, AD Wright, RL Milot, F Giustino, MB Johnston, LM Herz
    Nat. Commun., 9:293 (2018) [ abstract | pdf | doi:10.1038/s41467-017-02670-2 ]
  21. Photocurrent spectroscopy of perovskite solar cells over a wide temperature range from 15 to 350 k,
    JB Patel, QQ Lin, O Zadvorna, CL Davies, LM Herz, MB Johnston
    J. Phys. Chem. Lett., 9:263-268 (2018) [ abstract | pdf | doi:10.1021/acs.jpclett.7b02935 ]
  22. Modification of the fluorinated tin oxide/electron-transporting material interface by a strong reductant and its effect on perovskite solar cell efficiency,
    F Pulvirenti, B Wegner, NK Noel, G Mazzotta, R Hill, JB Patel, LM Herz, MB Johnston, MK Riede, HJ Snaith, N Koch, S Barlow, SR Marder
    Mol. Syst. Des. Eng., 3:741-747 (2018) [ abstract | pdf | doi:10.1039/C8ME00031J ]
  23. Large-Area, Highly Uniform Evaporated Formamidinium Lead Triiodide Thin Films for Solar Cells,
    J Borchert, RL Milot, JB Patel, CL Davies, AD Wright, L Martinez Maestro, HJ Snaith, LM Herz, MB Johnston
    ACS Energy Lett., 2:2799-2804 (2017) [ abstract | pdf | doi:10.1021/acsenergylett.7b00967 ]
  24. Unveiling the influence of ph on the crystallization of hybrid perovskites, delivering low voltage loss photovoltaics,
    NK Noel, M Congiu, AJ Ramadan, S Fearn, DP McMeekin, JB Patel, MB Johnston, B Wenger, HJ Snaith
    Joule, 1:328-343 (2017) [ abstract | pdf | doi:10.1016/j.joule.2017.09.009 ]
  25. Near-infrared and short-wavelength infrared photodiodes based on dye-perovskite composites,
    QQ Lin, ZP Wang, M Young, JB Patel, RL Milot, LM Maestro, RR Lunt, HJ Snaith, MB Johnston, LM Herz
    Adv. Funct. Mater., 27:1702485 (2017) [ abstract | pdf | doi:10.1002/adfm.201702485 ]
  26. Photon reabsorption masks intrinsic bimolecular charge-carrier recombination in {CH$_3$NH$_3$PbI$_3$} perovskite,
    TW Crothers, RL Milot, JB Patel, ES Parrott, J Schlipf, P Muller-buschbaum, MB Johnston, LM Herz
    Nano Lett., 17:5782-5789 (2017) [ abstract | pdf | doi:10.1021/acs.nanolett.7b02834 ]
  27. Crystallization kinetics and morphology control of formamidinium-cesium mixed-cation lead mixed-halide perovskite via tunability of the colloidal precursor solution,
    DP McMeekin, ZP Wang, W Rehman, F Pulvirenti, JB Patel, NK Noel, MB Johnston, SR Marder, LM Herz, HJ Snaith
    Adv. Mater., 29:1607039 (2017) [ abstract | pdf | doi:10.1002/adma.201607039 ]
  28. Efficient and air-stable mixed-cation lead mixed-halide perovskite solar cells with n-doped organic electron extraction layers,
    ZP Wang, DP McMeekin, N Sakai, K Wojciechowski, JB Patel, MB Johnston, HJ Snaith
    Adv. Mater., 29:UNSP 1604186 (2017) [ abstract | pdf | doi:10.1002/adma.201604186 ]
  29. Influence of Interface Morphology on Hysteresis in Vapor-Deposited Perovskite Solar Cells,
    JB Patel, J Wong-Leung, S Van Reenen, N Sakai, JTW Wang, ES Parrott, M Liu, HJ Snaith, LM Herz, MB Johnston
    Adv. Electron. Mater., 3:1600470 (2017) [ abstract | pdf | doi:10.1002/aelm.201600470 ]
  30. Photovoltaic mixed-cation lead mixed-halide perovskites: links between crystallinity, photo-stability and electronic properties,
    W Rehman, DP McMeekin, JB Patel, RL Milot, MB Johnston, HJ Snaith, LM Herz
    Energy Environ. Sci., 10:361-369 (2017) [ abstract | pdf | doi:10.1039/c6ee03014a ]
  31. Perovskite-perovskite tandem photovoltaics with optimized band gaps,
    GE Eperon, T Leijtens, KA Bush, R Prasanna, T Green, JTW Wang, DP McMeekin, G Volonakis, RL Milot, R May, A Palmstrom, DJ Slotcavage, RA Belisle, JB Patel, ES Parrott, RJ Sutton, W Ma, F Moghadam, B Conings, A Babayigit
    Science, 354:861-865 (2016) [ abstract | pdf | doi:10.1126/science.aaf9717 ]
  32. Bandgap-tunable cesium lead halide perovskites with high thermal stability for efficient solar cells,
    RJ Sutton, GE Eperon, L Miranda, ES Parrott, BA Kamino, JB Patel, MT Horantner, MB Johnston, AA Haghighirad, DT Moore, HJ Snaith
    Adv. Energy Mater., 6:1502458 (2016) [ abstract | pdf | doi:10.1002/aenm.201502458 ]
  33. Structured organic-inorganic perovskite toward a distributed feedback laser,
    M Saliba, SM Wood, JB Patel, PK Nayak, J Huang, JA Alexander-webber, B Wenger, SD Stranks, MT Horantner, JTW Wang, RJ Nicholas, LM Herz, MB Johnston, SM Morris, HJ Snaith, MK Riede
    Adv. Mater., 28:923-929 (2016) [ abstract | pdf | doi:10.1002/adma.201502608 ]
  34. Formation Dynamics of CH$_3$NH$_3$PbI$_3$ Perovskite Following Two-Step Layer Deposition,
    JB Patel, RL Milot, AD Wright, LM Herz, MB Johnston
    J. Phys. Chem. Lett., 7:96-102 (2016) [ abstract | pdf | doi:10.1021/acs.jpclett.5b02495 ]
  35. Efficient perovskite solar cells by metal ion doping,
    JTW Wang, ZP Wang, S Pathak, W Zhang, DW Dequilettes, F Wisnivesky-rocca-rivarola, J Huang, PK Nayak, JB Patel, HAM Yusof, Y Vaynzof, R Zhu, I Ramirez, J Zhang, C Ducati, C Grovenor, MB Johnston, DS Ginger, RJ Nicholas, HJ Snaith
    Energy Environ. Sci., 9:2892-2901 (2016) [ abstract | pdf | doi:10.1039/c6ee01969b ]
  36. Vibrational Properties of the Organic−Inorganic Halide Perovskite $CH_3NH_3PbI_3$ from Theory and Experiment: Factor Group Analysis, First-Principles Calculations, and Low-Temperature Infrared Spectra,
    MA Perez-Osorio, RL Milot, MR Filip, JB Patel, LM Herz, MB Johnston, F Giustino
    J. Phys. Chem. C, 119:25703--25718 (2015) [ abstract | pdf | doi:10.1021/acs.jpcc.5b07432 ]
  37. Enhanced amplified spontaneous emission in perovskites using a flexible cholesteric liquid crystal reflector,
    SD Stranks, SM Wood, K Wojciechowski, F Deschler, M Saliba, H Khandelwal, JB Patel, SJ Elston, LM Herz, MB Johnston, APHJ Schenning, MG Debije, MK Riede, SM Morris, HJ Snaith
    Nano Lett., 15:4935-4941 (2015) [ abstract | pdf | doi:10.1021/acs.nanolett.5b00678 ]