Iodine-rich mixed composition perovskites optimised for tin() oxide transport layers: the influence of halide ion ratio, annealing time, and ambient air aging on solar cell performance

Iodine-rich mixed composition metal-halide perovskites were developed to improve the performance of perovskite solar cell devices incorporating tin( iv ) oxide substrates for electron transport layers by optimizing the I/Br halide ion ratio. Device performance was further enhanced by exposing to amb...

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Bibliographic Details
Published in:Journal of materials chemistry. A, Materials for energy and sustainability Materials for energy and sustainability, 2019, Vol.7 (28), p.16947-16953
Main Authors: Ozaki, Masashi, Ishikura, Yasuhisa, Truong, Minh Anh, Liu, Jiewei, Okada, Iku, Tanabe, Taro, Sekimoto, Shun, Ohtsuki, Tsutomu, Murata, Yasujiro, Murdey, Richard, Wakamiya, Atsushi
Format: Article
Language:English
Subjects:
Aging
Carrier recombination
Composition
Crystallography
Current carriers
Electron transport
Energy conversion efficiency
Energy levels
Iodine
Performance enhancement
Perovskites
Photovoltaic cells
Recombination
Solar cells
Substrates
Tin
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Summary:Iodine-rich mixed composition metal-halide perovskites were developed to improve the performance of perovskite solar cell devices incorporating tin( iv ) oxide substrates for electron transport layers by optimizing the I/Br halide ion ratio. Device performance was further enhanced by exposing to ambient atmosphere over several days, which correlated with a shift of the energy levels in the perovskite and significant suppression of charge carrier recombination. A high power conversion efficiency of 20.6% was obtained for the aged device. Mixed composition metal-halide perovskites were developed to improve the performance of perovskite solar cell devices incorporating tin( iv ) oxide substrates for electron transport layers by optimizing the I/Br halide ion ratio.
ISSN:2050-7488
2050-7496
DOI:10.1039/c9ta02142f