Issue 7, 2024

Efficient quasi-2D tin perovskite solar cells based on mixed monoammonium and diammonium terminal molecules

Abstract

Tin perovskite is emerging as the most promising candidate for lead-free perovskite solar cells. However, the poor carrier transport properties, such as a short diffusion length, low carrier mobility and severe recombination, limit the boom of tin perovskite solar cells. In this work, we explored mixed monoammonium and diammonium terminal ligands to construct a quasi-2D tin perovskite film. The use of a diammonium ligand reduces the total number of terminal ligands in the film, and it retards perovskite film growth, which enhances the film orientation. These improvements enhance the carrier mobility and carrier diffusion length. As a result, the device shows enhanced current density and power conversion efficiency of 14.3%.

Graphical abstract: Efficient quasi-2D tin perovskite solar cells based on mixed monoammonium and diammonium terminal molecules

Supplementary files

Article information

Article type
Research Article
Submitted
31 Des 2023
Accepted
15 Feb 2024
First published
17 Feb 2024

Mater. Chem. Front., 2024,8, 1827-1834

Efficient quasi-2D tin perovskite solar cells based on mixed monoammonium and diammonium terminal molecules

Z. Zang, M. Ma, X. Jiang, W. Zhou, C. Seriwattanachai, P. Kanjanaboos and Z. Ning, Mater. Chem. Front., 2024, 8, 1827 DOI: 10.1039/D3QM01354E

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