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Low-temperature-processed inorganic perovskite solar cells via solvent engineering with enhanced mass transport

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Abstract

All-inorganic perovskite materials (e.g. CsPbI2Br) have been demonstrated to be a promising candidate as the light absorber for solar cells because of their remarkable thermal stability. Herein, we develop a simple low-temperature solution process to carefully control the perovskite crystallization kinetics with enhanced mass transport during film deposition. It resulted in high-quality inorganic CsPbI2Br perovskite films to achieve a stabilized power conversion efficiency of 14.31% in the resultant planar heterojunction solar cell. Importantly, the as-prepared devices showed excellent thermal stability and light stability, wherein the devices maintained 83.58% of their original efficiency after 85 °C heat treatment for 500 h, and 90.33% of their initial efficiency with continuous light soaking for 500 h, respectively. Therefore, a universally feasible strategy is suggested to fabricate high-quality inorganic perovskite thin films for higher performance optoelectronic devices.

Graphical abstract: Low-temperature-processed inorganic perovskite solar cells via solvent engineering with enhanced mass transport

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Publication details

The article was received on 12 Oct 2018, accepted on 29 Oct 2018 and first published on 30 Oct 2018


Article type: Paper
DOI: 10.1039/C8TA09859J
Citation: J. Mater. Chem. A, 2018, Advance Article
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    Low-temperature-processed inorganic perovskite solar cells via solvent engineering with enhanced mass transport

    H. Zai, D. Zhang, L. Li, C. Zhu, S. Ma, Y. Zhao, Z. Zhao, C. Chen, H. Zhou, Y. Li and Q. Chen, J. Mater. Chem. A, 2018, Advance Article , DOI: 10.1039/C8TA09859J

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