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10.26%-Efficiency All-Inorganic CsPbBr3 Perovskite Solar Cell by Spectra Engineering

Abstract

All-inorganic perovskite solar cell (PSC) is regarded as a promising solution to improve the environmental tolerances of emerging photovoltaics, however the narrow light response (< 550 nm) of cesium lead bromide (CsPbBr3) perovskite markedly drag power conversion efficiency (PCE) output. We present here experimental realization of physical proof-of-concept mixed light harvester from CsPbBr3 halide and inorganic SnS:ZnS photoactive layer (PAL) to broaden spectral absorption from 550 to 700 nm. Owing to the reduced surface defects of perovskite film, improved charge extraction and broadened light response, the all-inorganic PSC with a structure of FTO/c-TiO2/m-TiO2/CsPb0.97Tb0.03Br3/SnS:ZnS/NiOx/carbon delivers a short-circuit current density of 8.21 mA cm-2, an open-circuit voltage of 1.57 V, a fill factor of 79.6%, and a champion PCE as high as 10.26% under one sun illumination. The preliminary results also suggest that these devices are relatively stable under persistent attacks by 80% RH or temperature of 80 oC in air. The physical proof-of-the-concept mixed perovskite/PAL absorber provides new opportunities to wide-spectral response and therefore markedly increased PCE outputs.

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Publication details

The article was received on 13 Sep 2018, accepted on 06 Nov 2018 and first published on 06 Nov 2018


Article type: Paper
DOI: 10.1039/C8TA08900K
Citation: J. Mater. Chem. A, 2018, Accepted Manuscript
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    10.26%-Efficiency All-Inorganic CsPbBr3 Perovskite Solar Cell by Spectra Engineering

    H. Yuan, Y. Zhao, J. Duan, Y. Wang, X. Yang and Q. Tang, J. Mater. Chem. A, 2018, Accepted Manuscript , DOI: 10.1039/C8TA08900K

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