Pathways, Probes, and Puzzles of Broadband Luminescence in “Perovskite-Inspired” Materials

IF 9.6 1区化学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

ACS Materials Letters Pub Date : 2025-04-02 DOI:10.1021/acsmaterialslett.5c0027410.1021/acsmaterialslett.5c00274

Simon Kahmann*,

引用次数: 0

Abstract

So-called “perovskite-inspired” materials share structural motifs with perovskites but often lack their defining crystallographic attributes. This leads to a variety of different properties, and classifying them under the same label creates possibilities for misinterpretation. A key example is broadband luminescence, which is frequently attributed to the recombination of self-trapped excitons (STEs). In addition to a crucial distinction between defect-mediated luminescence and STEs, which has long been neglected, there is a lack of attention to how exciton localization varies across these materials. Differentiation between Wannier–Mott and Frenkel excitons is often lacking. By refining the language used to describe these excitons in “perovskite-inspired” materials, we can better capture the fundamental differences governing light emission in these exciting compounds.

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“钙钛矿启发”材料中宽带发光的途径、探针和难题

所谓的“钙钛矿启发”材料与钙钛矿具有相同的结构基元，但往往缺乏其定义的晶体学属性。这导致了各种不同的属性，将它们分类在同一个标签下会产生误解的可能性。一个关键的例子是宽带发光，这通常归因于自捕获激子（STEs）的重组。除了长期以来被忽视的缺陷介导发光和STEs之间的关键区别之外，还缺乏对这些材料中激子定位如何变化的关注。Wannier-Mott和Frenkel激子之间的区别通常是缺乏的。通过改进描述“钙钛矿启发”材料中这些激子的语言，我们可以更好地捕捉到这些激动人心的化合物中控制光发射的基本差异。

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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来源期刊

ACS Materials Letters MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

14.60

自引率

3.50%

发文量

261

期刊介绍： ACS Materials Letters is a journal that publishes high-quality and urgent papers at the forefront of fundamental and applied research in the field of materials science. It aims to bridge the gap between materials and other disciplines such as chemistry, engineering, and biology. The journal encourages multidisciplinary and innovative research that addresses global challenges. Papers submitted to ACS Materials Letters should clearly demonstrate the need for rapid disclosure of key results. The journal is interested in various areas including the design, synthesis, characterization, and evaluation of emerging materials, understanding the relationships between structure, property, and performance, as well as developing materials for applications in energy, environment, biomedical, electronics, and catalysis. The journal has a 2-year impact factor of 11.4 and is dedicated to publishing transformative materials research with fast processing times. The editors and staff of ACS Materials Letters actively participate in major scientific conferences and engage closely with readers and authors. The journal also maintains an active presence on social media to provide authors with greater visibility.