Improved Thermal Stability and Film Uniformity of Halide Perovskite by Confinement Effect brought by Polymer Chains of Polyvinyl Pyrrolidone

Polyvinyl pyrrolidone (PVP) is doped to PbI2 and organic salt during two‐step growth of halideperovskite. It is observed that PVP molecules can interact with both PbI2 and organic salt, reduce the aggregation and crystallization of the two, and then slow down the coarsening rate of perovskite. As do...

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Veröffentlicht in:	Small (Weinheim an der Bergstrasse, Germany) Germany), 2023-06, Vol.19 (25), p.e2207848-n/a
Hauptverfasser:	Wu, Shuyue, Lin, Siyuan, Shi, Zhiqiang, Guo, De'en, Huang, Han, Zhou, Xuefan, Zhang, Dou, Zhou, Kechao, Zhang, Wenhao, Hu, Yue, Zhou, Conghua
Format:	Artikel
Sprache:	eng
Schlagworte:	Coarsening Confinement confinement effect Crystallites Crystallization Density of states Doping Energy conversion efficiency Grain boundaries Nanotechnology Organic salts perovskite Perovskites Photovoltaic cells polyvinyl pyrrolidone (PVP) Solar cells stability Surface roughness thermal Thermal stability
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