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This article is cited in 1 scientific paper (total in 1 paper)
Polymers
Photoelectric properties of composite films based on organometallic perovskite CH$_{3}$NH$_{3}$PbBr$_{3}$ modified with mixed cellulose ester
N. K. Isaev, A. N. Aleshin Ioffe Institute, St. Petersburg, Russia
Abstract:
It is shown that the introduction of a mixed cellulose esters with acetrimethyl acetate into films of organometallic perovskite CH$_{3}$NH$_{3}$PbBr$_{3}$ significantly increases their stability while maintaining the optical and photoelectric properties of perovskite. It was found that with the introduction of 10–20 wt.% mixed cellulose ester in CH$_{3}$NH$_{3}$PbBr$_{3}$, the resistivity of the composite increases by 5–10 times within 60–70 days, while in pure perovskite films such changes are observed within 10–15 days. When the films are irradiated with a simulated sunlight, the resistance of the samples drops by 2–3 orders of magnitude, and the effect of photosensitivity persist for more than 2 months. The formation of hydrogen bonds between mixed cellulose ester and organometallic perovskite is, in our opinion, the main factor that increases the stability of the composite film in comparison with pure perovskite. The investigated composite films are promising for the design of degradation-resistant perovskite solar cells and light-emitting diodes.
Keywords:
organometallic perovskites, mixed cellulose esters, electrical conductivity, electrical stability.
Received: 22.09.2020 Revised: 22.09.2020 Accepted: 23.09.2020
Citation:
N. K. Isaev, A. N. Aleshin, “Photoelectric properties of composite films based on organometallic perovskite CH$_{3}$NH$_{3}$PbBr$_{3}$ modified with mixed cellulose ester”, Fizika Tverdogo Tela, 63:1 (2021), 152–156; Phys. Solid State, 63:1 (2021), 160–164
Linking options:
https://www.mathnet.ru/eng/ftt8211 https://www.mathnet.ru/eng/ftt/v63/i1/p152
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