Quantum Label of Organic Acid Ligands-Determined CsPbBr3 Perovskite Magic-Sized Clusters

Materials Open Research Pub Date : 2023-01-01 DOI:10.1142/s2811086223500012

Ke Xu, Guoqiang Shi, Binbin Qian, D. Xue

引用次数: 0

Abstract

A strategy for synthesizing stable, pure, and excellent luminescent perovskite magic-sized clusters (PMSCs) by optimizing ligands is proposed. The optimal ligand pair was selected from methylphosphonic acid (MPA), valeric acid (VA), and butanesulfonic acid (BA) ligands in conjunction with ethylenediamine (EDA), respectively. Through ligand-assisted reprecipitation (LAPR) method, MPA–EDA CsPbBr3 PMSCs with high photoluminescence quantum yield (PLQY) of up to [Formula: see text]72% and excellent stability were optimized. By the density of states (DOS) analysis, the differences in luminescence properties were explored to originate from Pb(6[Formula: see text]–Br(4[Formula: see text] hybridization, and the hypothesis of constructing quantum maps of functional materials based on valence electron orbital hybridization was proposed. The above results provide a reliable experimental and theoretical direction for the future application of quantum label PMSCs in the field of optoelectronic devices.

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有机酸配体测定CsPbBr3钙钛矿神奇大小团簇的量子标记

提出了一种通过优化配体来合成稳定、纯净、优异的发光钙钛矿魔术大小簇(PMSCs)的策略。分别从甲基膦酸(MPA)、戊酸(VA)和丁烷磺酸(BA)配体中筛选出与乙二胺(EDA)结合的最佳配体对。通过配体辅助再沉淀(LAPR)方法，优化得到光致发光量子产率(PLQY)高达72%且稳定性优异的MPA-EDA CsPbBr3 PMSCs。通过态密度(DOS)分析，探讨了Pb(6)[公式:见文]-Br(4][公式:见文]杂化引起的发光特性差异，并提出了基于价电子轨道杂化构建功能材料量子图的假设。上述结果为量子标记PMSCs在光电器件领域的应用提供了可靠的实验和理论方向。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Materials Open Research materials science-

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