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Planar Perovskite Solar Cells Using Perovskite CsPbI₃ Quantum Dots as Efficient Hole Transporting Layers.

ABSTRACT: Perovskite CsPbI₃ quantum dots (QDs) were synthesized as a hole-transporting layer (HTL) of a planar perovskite solar cell (PSC). By using the Octam solution during the ligand engineering, CsPbI₃ QDs exhibits a denser grain and a larger grain size due to the short-chain ligands of Octam. In addition, CsPbI₃ QDs with the Octam solution showed a smooth and uniform surface on MAPbI₃ film, indicating the QDs improved the microstructure of the MAPbI₃ perovskite film. As a result, the PSC with CsPbI₃ QDs as an HTL has the optimal open-circuit voltage as 1.09 V, the short-circuit current as 20.5 mA/cm², and the fill factor (FF) as 75.7%, and the power conversion efficiency (PCE) as 17.0%. Hence, it is inferred that introducing QDs as a HTL via the ligand engineering can effectively improve the device performance of the PSC.

SUBMITTER: Liang TC

PROVIDER: S-EPMC9788023 | biostudies-literature | 2022 Dec

REPOSITORIES: biostudies-literature

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Planar Perovskite Solar Cells Using Perovskite CsPbI3 Quantum Dots as Efficient Hole Transporting Layers.

Liang Tsair-Chun TC Su Hsin-Yu HY Chen Sih-An SA Chen Yen-Ju YJ Chiang Chung-Yu CY Chiang Chih-Hsun CH Kao Tzung-Ta TT Chen Lung-Chien LC Lin Chun-Cheng CC

Materials (Basel, Switzerland) 20221213 24

Perovskite CsPbI3 quantum dots (QDs) were synthesized as a hole-transporting layer (HTL) of a planar perovskite solar cell (PSC). By using the Octam solution during the ligand engineering, CsPbI3 QDs exhibits a denser grain and a larger grain size due to the short-chain ligands of Octam. In addition, CsPbI3 QDs with the Octam solution showed a smooth and uniform surface on MAPbI3 film, indicating the QDs improved the microstructure of the MAPbI3</ ...[more]

PMID: 36556708

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