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Cesium-Doped Vanadium Oxide as the Hole Extraction Layer for Efficient Perovskite Solar Cells.

ABSTRACT: In this study, we report the utilization of low-temperature solution-processed Cs-doped VO_X thin films as the hole extraction layers (HELs) in perovskite solar cells (PSCs). It is found that the VO_X:yCs (where y is the mole ratio of Cs versus V and y = 0.1, 0.3, and 0.5) thin films possess better electrical conductivities than that of the pristine VO_X thin film. As a result, the PSCs incorporated with the VO_X:yCs HEL exhibit large fill factors and high short-circuit currents, with consequently high power conversion efficiencies, which is more than 30% enhancement as compared with pristine VO_X HEL. Our studies provide a facial way to enhance the electrical conductivity of the hole extraction layer for boosting device performance of perovskite solar cells.

SUBMITTER: Yao X

PROVIDER: S-EPMC6641240 | biostudies-literature | 2018 Jan

REPOSITORIES: biostudies-literature

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Cesium-Doped Vanadium Oxide as the Hole Extraction Layer for Efficient Perovskite Solar Cells.

Yao Xiang X Qi Jun J Xu Wenzhan W Jiang Xiaofang X Gong Xiong X Cao Yong Y

ACS omega 20180126 1

In this study, we report the utilization of low-temperature solution-processed Cs-doped VOX thin films as the hole extraction layers (HELs) in perovskite solar cells (PSCs). It is found that the VOX:yCs (where y is the mole ratio of Cs versus V and y = 0.1, 0.3, and 0.5) thin films possess better electrical conductivities than that of the pristine VOX thin film. As a result, the PSCs incorporated with the VOX:yCs HEL exhibit ...[more]

PMID: 31457954

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