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Semiconductor and Material Spectroscopy Laboratory
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Self-Patterned CsPbBr3 Nanocrystals for High-Performance Optoelectronics

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Self-Patterned CsPbBr3 Nanocrystals for High-Performance Optoelectronics

by Bin Xin, Yusin Pak, Somak Mitra, Dhaifallah Almalawi, Norah Alwadai, Yuhai Zhang, Iman S Roqan
Year: 2019 DOI: https://doi.org/10.1021/acsami.8b17249

Abstract

All-inorganic lead halide perovskites are promising materials for many optoelectronic applications. However, two issues that arise during device fabrication hinder their practical use, namely, inadequate continuity of coated inorganic perovskite films across large areas and inability to integrate these films with traditional photolithography due to poor adhesion to wafers. Herein, for the first time, to address these issues, we show a room-temperature synthesis process employed to produce CsPbBr3 perovskite nanocrystals with two-dimensional (2D) nanosheet features. Due to the unique properties of these 2D nanocrystals, including the “self-assembly” characteristic, the “double solvent evaporation inducing self-patterning” strategy is used to generate high-quality patterned thin films in selected areas automatically after drop-casting, enabling fabrication of high-performance devices without using complex and …

Keywords

Self-Patterned CsPbBr3 Nanocrystals for High-Performance Optoelectronics
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