Probing the structure–property–composition relationship in organic–inorganic tri-halide perovskites

Julia L Payne, Chengsheng Ni, Jonathon R Harwell, Lethy Krishnan Jagadamma, Calum McDonald, Davide Mariotti, Ifor D W Samuel, John T. S. Irvine

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Abstract

Here, we have synthesised a range of samples, with the formula (CH3NH3)1−2x(H3NC2H4NH3)xPbI3, with different levels of ethylenediammonium substitution to probe non-stoichiometry at the A-site of the perovskite. A single phase region was identified and is accompanied by a change in photophysical properties. The influence of aliovalent substitution with ethylenediammonium results in a decrease in HOMO level from −5.31 eV for x = 0 to −5.88 eV for x = 0.15.
Original languageEnglish
Pages (from-to)20489-20496
JournalPhysical Chemistry Chemical Physics
Volume20
Issue number31
Early online date16 Jul 2018
DOIs
Publication statusE-pub ahead of print - 16 Jul 2018

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    Payne, J. L., Ni, C., Harwell, J. R., Jagadamma, L. K., McDonald, C., Mariotti, D., Samuel, I. D. W., & Irvine, J. T. S. (2018). Probing the structure–property–composition relationship in organic–inorganic tri-halide perovskites. Physical Chemistry Chemical Physics, 20(31), 20489-20496. https://doi.org/10.1039/C8CP01871E