Effect of Al2O3 and Ga2O3 on the photoluminescence of borosilicate glasses embedding CsPbBr3 perovskite nanocrystals

IF 2.5 3区材料科学 Q2 MATERIALS SCIENCE, CERAMICS

International Journal of Applied Glass Science Pub Date : 2025-05-27 DOI:10.1111/ijag.16709

Thi Thuy Pham, Jinju Lee, Devarajulu Gelija, Woon Jin Chung

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Abstract

CsPbBr₃ perovskite nanocrystals (PNCs) were successfully embedded in a borosilicate glass matrix for a robust green color converter, and its photoluminescence quantum yield (PLQY) was optimized by varying glass composition and heat treatment conditions. A high PLQY of up to 68% was obtained under 450 nm excitation by adjusting ZnO and Al₂O₃ content and by incorporating Ga₂O₃. The formation of PNCs was confirmed by X-ray diffraction (XRD) and transmission electron microscope (TEM), while the effect of compositional variation was investigated by nuclear magnetic resonance (NMR), Raman spectroscopy, and X-ray photoelectron spectroscopy (XPS). Time-resolved photo-luminescence (TRPL) also examined the effect of the composition and the heat treatment on the PLQY. Thermal, chemical, and photonic stabilities of the CsPbBr₃ PNC embedded glass (PNEG) were examined to show its robustness for practical applications. A white light-emitting device consisting of CsPbBr₃ PNEG and commercial red phosphor (K₂SiF₆:Mn⁴⁺) with an InGaN blue LED chip was composed and achieved a wide color gamut reaching up to 131% of the NTSC standard, successfully demonstrating its practical feasibility as a color converter for display applications.

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Al2O3和Ga2O3对包埋CsPbBr3钙钛矿纳米晶的硼硅酸盐玻璃光致发光的影响

将CsPbBr3钙钛矿纳米晶体（PNCs）成功嵌入到硼硅酸盐玻璃基体中，用于鲁棒绿色转换器，并通过改变玻璃成分和热处理条件来优化其光致发光量子产率（PLQY）。通过调整ZnO和Al2O3的含量以及加入Ga2O3，在450 nm激发下获得了高达68%的高PLQY。通过x射线衍射（XRD）和透射电子显微镜（TEM）证实了pnc的形成，并通过核磁共振（NMR）、拉曼光谱（Raman spectroscopy）和x射线光电子能谱（XPS）研究了组分变化对pnc的影响。时间分辨光致发光（TRPL）也考察了组分和热处理对PLQY的影响。研究了CsPbBr3 PNC嵌入式玻璃（PNEG）的热稳定性、化学稳定性和光子稳定性，证明了其在实际应用中的鲁棒性。由CsPbBr3 PNEG和商用红色荧光粉（K2SiF6:Mn4+）组成的白色发光器件与InGaN蓝色LED芯片组成，实现了高达NTSC标准131%的宽色域，成功地证明了其作为显示应用的颜色转换器的实际可行性。

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来源期刊

International Journal of Applied Glass Science MATERIALS SCIENCE, CERAMICS-

CiteScore

4.50

自引率

9.50%

发文量

审稿时长

>12 weeks

期刊介绍： The International Journal of Applied Glass Science (IJAGS) endeavors to be an indispensable source of information dealing with the application of glass science and engineering across the entire materials spectrum. Through the solicitation, editing, and publishing of cutting-edge peer-reviewed papers, IJAGS will be a highly respected and enduring chronicle of major advances in applied glass science throughout this century. It will be of critical value to the work of scientists, engineers, educators, students, and organizations involved in the research, manufacture and utilization of the material glass. Guided by an International Advisory Board, IJAGS will focus on topical issue themes that broadly encompass the advanced description, application, modeling, manufacture, and experimental investigation of glass.