晨间信号Morning Signal
《科学》 第391卷 第6782期 · 2026年1月15日 · 中文解读

分层壳层锁定并稳定钙钛矿纳米晶,实现近统一量子产率

A hierarchical shell locks and stabilizes perovskite nanocrystals with near-unity quantum yield · Q. Zeng et al.
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这篇讲什么
本文介绍了一种由PbSO4-SiO2-聚合物多层构成的分层壳层结构,通过晶格-界面互锁机制同时锁定软晶格并稳定表面,使钙钛矿纳米晶薄膜实现近统一光致发光量子产率(PLQY)和商业可行的稳定性。
原文开头
Full article and list of author affiliations: https://doi.org/10.1126/ science.ady1370 Qingsen Zeng et al. INTRODUCTION: Luminescent materials have powered advances in various applications, including displays, lighting, sensing, imaging, and optical communication. Solid-state light emitters must exhibit both strong absorption and high photoluminescence quantum yield (PLQY) to maximize light-conversion efficiency. However, almost all known emitters exhibit concentration- induced quenching and self-absorption when integrated into dense solid films, fundamentally limiting external quantum yield (EQY; PLQY × absorptance) and light-conversion efficiency. Consequently, more than 2000 terawatt-hours of electricity are wasted annually in lighting and display technologies because of suboptimal electro-optical conversion, corresponding to ~8% of global electricity consumption. …
摘自《科学》(Science)第391卷 第6782期 · 2026年1月15日,Q. Zeng et al.。仅引用开头一小段供了解文章,版权归原刊所有,全文请阅读原刊。
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