硫系化合物
材料科学
支化(高分子化学)
纳米技术
纳米晶
纳米结构
发光二极管
半导体
胶体
金属
光电子学
化学工程
冶金
复合材料
工程类
作者
Faris Horani,K.N. Sharma,Azhar Abu-Hariri,Efrat Lifshitz
标识
DOI:10.1021/acs.jpclett.3c00285
摘要
Colloidal syntheses of metal chalcogenides yield nanostructures of various 1D, 2D, and 3D nanocrystals (NCs), including branched nanostructures (BNSs) of nanoflowers, tetrapods, octopods, nanourchins, and more. Efforts are continuously being made to understand the branching mechanism in colloidally prepared metal chalcogenides for tailor-making them into various morphologies for dedicated applications in solar cells, light-emitting diodes, stress sensor devices, and near-infrared photodetectors. The vital role of precursors and ligands has widely been recognized in directing nanocrystal morphology during the colloidal synthesis of metal chalcogenide nanostructures. Moreover, a few basic branching mechanisms in nanocrystals have also been derived from decades-long observations of branching in NCs. This Perspective (a) accounts for the mediation of branching in In2S3, PbS, MoSe2, WSe2, and WS2; (b) analyzes the underlying mechanisms; and (c) gives a future perspective toward better controlling the BNSs' morphologies and their impact on applications.
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