A Comprehensive Review on Mechanisms and Applications of Rare‐Earth Based Perovskite Nanocrystals †

作者：Xiaoshan Zhang, Yikun Wang, Xiang Wu, Feilong Wang, Qiongrong Ou, Shuyu Zhang · 发表于：Chinese Journal of Chemistry · 年份：2024 · DOI：10.1002/cjoc.202300344 · 被引用次数：44 · 研究领域：Perovskite Materials and Applications、Luminescence Properties of Advanced Materials、Solid-state spectroscopy and crystallography

Comprehensive Summary Rare earth (RE) ions, with abundant 4f energy level and unique electronic arrangement, are considered as substitutes for Pb 2+ in perovskite nanocrystals (PNCs), allowing for partial or complete replacement of lead and minimizing environmental impact. This review provides a comprehensive overview of the characteristics of RE‐doped PNCs, including up‐conversion luminescence, down‐conversion luminescence, and quantum confinement effects, etc . Additionally, RE doping has been found to effectively suppress defect formation, reduce nonradiative recombination, enhance photoluminescence quantum yield (PLQY), and even allow for controlling over the morphology of the nanocrystals. The review also highlights the recent advancements in lead‐free RE‐based perovskites, especially in the case of Eu‐based perovskites (CsEuBr 3 and CsEuCl 3 ). Furthermore, it briefly introduces the applications of PNCs in various fields, such as perovskite solar cells (PSCs), luminescent solar concentrators (LSCs), photodetectors (PDs), and light‐emitting diodes (LEDs). A systematic discussion on the luminescence mechanisms of RE‐doped PNCs and lead‐free RE‐based perovskites is provided, along with an outlook on future research directions. The ultimate goal of this review is to provide guidance for the development of RE‐based perovskite optoelectronic devices. Key Scientists In 2015, Kovalenko et al. pioneered the synthesis of lead‐based perovskite nanocrystals using the thermal inject...