Planar Perovskite Solar Cells Using Perovskite CsPbI Quantum Dots As Efficient Hole Transporting Layers

Overview

Journal Materials (Basel)

Publisher MDPI

Date 2022 Dec 23

PMID 36556708

Authors

Tsair-Chun Liang

Hsin-Yu Su

Sih-An Chen

Yen-Ju Chen

Chung-Yu Chiang

Chih-Hsun Chiang

Tzung-Ta Kao

Lung-Chien Chen

Chun-Cheng Lin

Affiliations

Soon will be listed here.

Abstract

Perovskite CsPbI 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, CsPbI QDs exhibits a denser grain and a larger grain size due to the short-chain ligands of Octam. In addition, CsPbI QDs with the Octam solution showed a smooth and uniform surface on MAPbI film, indicating the QDs improved the microstructure of the MAPbI perovskite film. As a result, the PSC with CsPbI QDs as an HTL has the optimal open-circuit voltage as 1.09 V, the short-circuit current as 20.5 mA/cm, 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.

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PMID: 38419867 PMC: 10898446. DOI: 10.1039/d3na01063e.

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