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Effect of Cs-Incorporated NiO _x on the Performance of Perovskite Solar Cells.

ABSTRACT: The effect of Cs-incorporated NiO _x on perovskite solar cells with an inverted structure was investigated, where NiO _x and PCBM were used as selective contacts for holes and electrons, respectively. It was found that the generation of an Ni phase in an NiO _x layer was significantly suppressed by employing cesium. Furthermore, Cs-incorporated NiO _x enabled holes to be efficiently separated at the interface, showing the improved photoluminescent quenching and thus generating higher short-circuit current. The effect of Cs incorporation was also prominent in the inhibition of recombination. The recombination resistance of Cs-incorporated NiO _x was noticeably increased by more than three-fold near the maximum power point, leading to a higher fill factor of 0.78 and consequently a higher power conversion efficiency of 17.2% for the device employing Cs-incorporated NiO _x .

SUBMITTER: Kim HS

PROVIDER: S-EPMC6645592 | biostudies-literature | 2017 Dec

REPOSITORIES: biostudies-literature

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Effect of Cs-Incorporated NiO x on the Performance of Perovskite Solar Cells.

Kim Hui-Seon HS Seo Ji-Youn JY Xie Haibing H Lira-Cantu Monica M Zakeeruddin Shaik M SM Grätzel Michael M Hagfeldt Anders A

ACS omega 20171218 12

The effect of Cs-incorporated NiO x on perovskite solar cells with an inverted structure was investigated, where NiO x and PCBM were used as selective contacts for holes and electrons, respectively. It was found that the generation of an Ni phase in an NiO x layer was significantly suppressed by employing cesium. Furthermore, Cs-incorporated NiO x enabled holes to be efficiently separated at the interface, showing the improv ...[more]

PMID: 31457429

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