Mn2+-Doped Perovskite Nanocrystals Embedded in Glass With Green–Red Emissions for Wide-Gamut White Light-Emitting Diodes

IF 4.2 3区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Journal of the American Ceramic Society Pub Date : 2026-05-28 DOI:10.1111/jace.70877

Ming Yang, Yudong Zhang, Wenchao Zhang, Jong Heo, Chao Liu

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引用次数: 0

Abstract

We demonstrate tunable green–red dual-band photoluminescence (PL) in glasses containing Mn²⁺-doped CsPbBr₃ nanocrystals (NCs) and evaluate their application in white light-emitting diodes (WLEDs). Green emission from CsPbBr₃ NCs was achieved by controlling the competitive growth between CsPbBr₃ and Cs₄PbBr₆ crystals. Red emission originates from energy transfer from CsPbBr₃ excitons to Mn²⁺ ions. The relative PL intensity ratio of red to green emission (I_Mn/I_Ex) reached values as high as 7.19, while the maximum photoluminescence quantum yield (PLQY) was 44 ± 1% following heat treatment at 560°C for 15 h. The glass exhibited excellent spectral stability at 175°C and after immersion in water for 30 days. A prototype WLED fabricated using a monolithic glass plate and a 450 nm blue LED chip produced high-quality white light with CIE coordinates of (0.338, 0.324) and a wide color gamut. The color converter also showed excellent photostability, retaining ∼90% of its initial luminous efficacy after 100 h of operation. These results highlight the strong potential of Mn²⁺-doped perovskite NC glasses for practical WLED applications.

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宽色域白光发光二极管中嵌入Mn2+掺杂钙钛矿纳米晶体的绿-红发射特性

我们在含有Mn2+掺杂CsPbBr3纳米晶体（NCs）的玻璃中展示了可调谐的绿-红双频光致发光（PL），并评估了它们在白光发光二极管（wled）中的应用。通过控制CsPbBr3和Cs4PbBr6晶体之间的竞争生长，实现了CsPbBr3纳米材料的绿色发光。红色发射源于CsPbBr3激子向Mn2+离子的能量转移。在560℃热处理15 h后，红绿发光的相对发光强度比（IMn /IEx）高达7.19，最大光致发光量子产率（PLQY）为44±1%。在175℃和水中浸泡30天后，该玻璃具有良好的光谱稳定性。使用单片玻璃板和450nm蓝色LED芯片制造的WLED原型产生高质量的白光，CIE坐标为（0.338,0.324），色域宽。颜色转换器还表现出优异的光稳定性，在运行100小时后仍保持其初始发光效率的90%。这些结果突出了Mn2+掺杂钙钛矿NC玻璃在实际WLED应用中的强大潜力。

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来源期刊

Journal of the American Ceramic Society 工程技术-材料科学：硅酸盐

CiteScore

7.50

自引率

7.70%

发文量

590

审稿时长

2.1 months

期刊介绍： The Journal of the American Ceramic Society contains records of original research that provide insight into or describe the science of ceramic and glass materials and composites based on ceramics and glasses. These papers include reports on discovery, characterization, and analysis of new inorganic, non-metallic materials; synthesis methods; phase relationships; processing approaches; microstructure-property relationships; and functionalities. Of great interest are works that support understanding founded on fundamental principles using experimental, theoretical, or computational methods or combinations of those approaches. All the published papers must be of enduring value and relevant to the science of ceramics and glasses or composites based on those materials. Papers on fundamental ceramic and glass science are welcome including those in the following areas: Enabling materials for grand challenges[...] Materials design, selection, synthesis and processing methods[...] Characterization of compositions, structures, defects, and properties along with new methods [...] Mechanisms, Theory, Modeling, and Simulation[...] JACerS accepts submissions of full-length Articles reporting original research, in-depth Feature Articles, Reviews of the state-of-the-art with compelling analysis, and Rapid Communications which are short papers with sufficient novelty or impact to justify swift publication.