Abstract
Fully inorganic lead trihalide perovskite CsPbX3 nanocrystals (NCs) have attracted significant attention over the past three years owing to excellent optical and optoelectronic properties, facile synthesis processes, and great potentials for a broad range of applications. As a new class of superstar semiconductors, CsPbX3 NCs are essential materials for novel lighting, display, photodetector and photovoltaics devices. The simultaneous realization of property control, improving stability and reducing the content of toxic lead remains open questions. Pb2+-site of CsPbX3 host lattices is of extreme importance to determine its optoelectronic properties. Hence, introducing proper ions in Pb2+-site via an effective and controllable strategy is the best way to solve these problems. In this review, we overview recent progress in understanding and controlling the doping of CsPbX3 NCs. Firstly, the effects of metal ions doping on its optical and electrical properties are summarized. Then, the roles of anions of dopant and driving forces in dopant incorporation are discussed. In addition, various post-synthetic doping techniques and related mechanisms are highlighted. Finally, we provide suggestions for further research and potential development of doped-CsPbX3 NCs in the future.
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