Regular Article

The effect of the environment and prolonged illumination on conductivity and photoconductivity of organometallic perovskite CH3NH3PbI3 films

D. V. Amasev$^1$, A. G. Kazanskii$^2$, S. A. Kozukhin$^3$, E. V. Tekshina$^4$

Memoirs of the Faculty of Physics 2018. N 3.

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Annotation

The effect of prolonged illumination of CH3NH3PbI3 films on their conductivity and spectral dependences of photoconductivity is studied. A significant influence of ambient medium (vacuum, air) on the results of measurements is found. It is shown that prolonged illumination does not change the interband photoconductivity, but leads to a metastable increase in photoconductivity near 1.2 eV quantum energy. The obtained result indicates the photoinduced creation or filling of localized states located in the forbidden gap of CH3NH3PbI3 at an energy distance of 1.2 eV from the level of nonequilibrium carriers charge transfer.

Received: 2018 May 15

Approved: 2018 June 27

PACS:

72.20.-i Conductivity phenomena in semiconductors and insulators

Authors

D. V. Amasev$^1$, A. G. Kazanskii$^2$, S. A. Kozukhin$^3$, E. V. Tekshina$^4$
$^1$A.M. Prokhorov General Physics Institute RAS\
$^2$Faculty of Physics, M.V. Lomonosov Moscow State University.\
$^3$Institute of General and Inorganic Chemistry RAS\
$^4$Moscow Pedagogical State University

Issue 3, 2018

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