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Toward charge extraction in all-inorganic perovskite solar cells by interfacial engineering

Abstract

All-inorganic perovskite solar cell (PSC) is a promising solution to address the poor stability of organic-inorganic hybrid PSC devices under humidity and thermal attacks. However, the serious interfacial charge recombination from large energy differences has markedly dragged further enhancement of power conversion efficiency. The charge extraction from perovskite layer is improved by setting intermediated energy levels with quantum dots (QDs) through interfacial engineering. In the current work, CuInS2/ZnS QDs with tunable bandgaps and hole-transporting behavior are prepared to modify CsPbBr3/carbon interface. Arising from the improved charge separation, a power conversion efficiency of 8.42% is achieved for QD tailored inorganic PSC in comparison with 6.01% for pristine device. These all-inorganic PSCs present unprecedented stability under high humidity attack and significant improvements in the fill factor, short-circuit photocurrent, and open-circuit voltage.

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Publication details

The article was received on 19 Mar 2018, accepted on 03 May 2018 and first published on 08 May 2018


Article type: Paper
DOI: 10.1039/C8TA02522C
Citation: J. Mater. Chem. A, 2018, Accepted Manuscript
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    Toward charge extraction in all-inorganic perovskite solar cells by interfacial engineering

    J. Ding, J. Duan, C. Guo and Q. Tang, J. Mater. Chem. A, 2018, Accepted Manuscript , DOI: 10.1039/C8TA02522C

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