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Mixed-Organic-Cation Tin Iodide for Lead-Free Perovskite Solar Cells with an Efficiency of 8.12.

ABSTRACT: In this work, a fully tin-based, mixed-organic-cation perovskite absorber (FA) _x (MA)_1-_x SnI₃ (FA = NH₂CH = NH₂⁺, MA = CH₃NH₃⁺) for lead-free perovskite solar cells (PSCs) with inverted structure is presented. By optimizing the ratio of FA and MA cations, a maximum power conversion efficiency of 8.12% is achieved for the (FA)_0.75(MA)_0.25SnI₃-based device along with a high open-circuit voltage of 0.61 V, which originates from improved perovskite film morphology and inhibits recombination process in the device. The cation-mixing approach proves to be a facile method for the efficiency enhancement of tin-based PSCs.

SUBMITTER: Zhao Z

PROVIDER: S-EPMC5700647 | biostudies-literature | 2017 Nov

REPOSITORIES: biostudies-literature

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Mixed-Organic-Cation Tin Iodide for Lead-Free Perovskite Solar Cells with an Efficiency of 8.12.

Zhao Ziran Z Gu Feidan F Li Yunlong Y Sun Weihai W Ye Senyun S Rao Haixia H Liu Zhiwei Z Bian Zuqiang Z Huang Chunhui C

Advanced science (Weinheim, Baden-Wurttemberg, Germany) 20170714 11

In this work, a fully tin-based, mixed-organic-cation perovskite absorber (FA) x (MA)1-x SnI3 (FA = NH2CH = NH2+, MA = CH3NH3+) for lead-free perovskite solar cells (PSCs) with inverted structure is presented. By optimizing the ratio of FA and MA cations, a maximum power conversion efficiency of 8.12% is achieved for the (FA)0.75(MA)0.25SnI3 ...[more]

PMID: 29201617

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