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Stability Improvement of Perovskite Solar Cells for Application of CuInS2 Quantum Dot-Modified TiO2 Nanoarrays.

ABSTRACT: In this work, we developed a CH3NH3PbI3 perovskite solar cell with CuInS2 quantum dot-modified TiO2 nanoarrays (TiO2-CuInS2 QD-NAs) as a scaffold layer. Based on the suitable device configuration, we achieved improved power conversion efficiency (PCE) of 13.3%, which was 38.3% higher than that of the device without QD modification (8.2%). After exposure to air for 30 days, the TiO2-CuInS2 QD-NA-based device possessed a PCE of 5.4%, being 41% of the original performance, which was far superior to that of TiO2 nanoarray-based solar cells with a PCE of 1.1%. Our results showed that the crystallinity of perovskite, surface state, and interface for charge transport of TiO2-CuInS2 QD-NA-based perovskites all remarkably improved, indicating the improved air stability for TiO2-CuInS2 QD-NA-based solar cells.

SUBMITTER: Gao F 

PROVIDER: S-EPMC6648818 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature

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Stability Improvement of Perovskite Solar Cells for Application of CuInS<sub>2</sub> Quantum Dot-Modified TiO<sub>2</sub> Nanoarrays.

Gao Feng F   Zheng Qing Q   Zhang Ying Y  

ACS omega 20190215 2

In this work, we developed a CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3</sub> perovskite solar cell with CuInS<sub>2</sub> quantum dot-modified TiO<sub>2</sub> nanoarrays (TiO<sub>2</sub>-CuInS<sub>2</sub> QD-NAs) as a scaffold layer. Based on the suitable device configuration, we achieved improved power conversion efficiency (PCE) of 13.3%, which was 38.3% higher than that of the device without QD modification (8.2%). After exposure to air for 30 days, the TiO<sub>2</sub>-CuInS<sub>2</sub> QD-NA-bas  ...[more]

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