无铅双钙钛矿Cs_(2)AgInCl_(6)纳米晶体的合成策略及光学特性

Synthesis strategy and optical properties of lead-free double perovskites Cs_(2)AgInCl_(6) nanocrystals

无铅卤化物双钙钛矿(HDPs)作为替代有毒且稳定性弱的铅基钙钛矿引起广泛的关注。通过向Cs_(2)AgInCl_(6)双钙钛纳米晶体(NCs)中掺杂各种元素,产生了有趣的光学特性,即自陷激子发射和掺杂元素诱导光致发光。这种有趣的光学特性激发了人们探索Cs_(2)AgInCl_(6) NCs的不同合成方法,以及对除Ag^(+)和In^(3+)外其他单价和三价阳离子的许多合金成分的探索。介绍了近年来Cs_(2)AgInCl_(6) NCs的研究进展,包括合成策略,光学特性以及不同合金化和掺杂效应引起的可协调的光致发光。

Lead-free halide double perovskites(HDPs)have attracted extensive attention as an alternative to toxic and less stable lead-based perovskites.Among them,Cs_(2)AgInCl_(6) double perovskites nanocrystals(NCs)with various elements afforded interesting optical properties,namely self-trapped exciton emission and doped element-induced photoluminescence,were produced by doping.This intriguing optical property has motivated the exploration of different synthesis methods for Cs_(2)AgInCl_(6) NCs,as well as the exploration of many alloy compositions for other monovalent and trivalent cations besides Ag^(+) and In^(3+).The recent research progress of Cs_(2)AgInCl_(6) NCs is presented including synthesis strategies,optical properties,and coordinated photoluminescence induced by different alloying and doping effects.