Effect of the heat treatment of CH3NH3PbI3 perovskite on its electrical and photoelectric properties |
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| Affiliation: | 1. Prokhorov General Physics Institute, Russian Academy of Sciences, 119991 Moscow, Russian Federation;2. Department of Physics, M. V. Lomonosov Moscow State University, 119991 Moscow, Russian Federation;3. A. N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, 119071 Moscow, Russian Federation |
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| Abstract: | The effect of the annealing of CH3NH3PbI3 perovskite on its electrical, photoelectric and optical properties has been estimated. The annealing leads to a two-phase structure consisting of perovskite and lead iodide, whose relative concentrations depend on the annealing temperature. The formation of a PbI2 phase in a perovskite film upon heating leads to a decrease in the conductivity and photoconductivity of two-phase material, which contradicts the assumption of a decrease in recombination associated with PbI2, obtained by measuring the parameters of a solar cell. |
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| Keywords: | perovskites temperature annealing photoconductivity activation energy spectra decomposition degradation |
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