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Enhanced stability of red-emitting CsPbI3:Yb3+nanocrystal glasses: A potential luminescent material
Journal of Non-Crystalline Solids ( IF 3.2 ) Pub Date : 2020-06-22 , DOI: 10.1016/j.jnoncrysol.2020.120232
Lin Yuan , Lei Zhou , Weidong Xiang , Xiaojuan Liang

CsPbX3 (X=Cl, Br or I) has been studied due to its outstanding optical properties. However, it is difficult to use in practical applications due to its poor stability. Currently, there are interesting examples of CsPbX3 compounded with glass substrates. The quantum efficiencies of CsPbX3 NC glasses are relatively low. In this work, we propose a simple method for fabricating Yb3+-doped CsPbI3 quantum dots in glass via a conventional melt quenching technique. It was found that the CsPbI3 NC glasses had blue-shifted emission with increasing amounts of the Yb3+ dopant. The photoluminescence quantum yield (PLQY) of CsPbI3: Yb3+ NC glass reached from 20% to 66.7%. And the CsPbI3: Yb3+ NC glass exhibited good thermal stability. Moreover, the experimental results showed th*at the CsPbI3: Yb3+ glass could match the properties of a commercial fluorescent powder used to make white LEDs (WLEDs).



中文翻译:

发射红色的CsPbI 3:Yb 3+纳米晶体玻璃的稳定性增强:潜在的发光材料

由于CsPbX 3(X = Cl,Br或I)的出色光学性能,已经对其进行了研究。但是,由于其稳定性差,难以在实际应用中使用。目前,有有趣的CsPbX 3与玻璃基板复合的例子。CsPbX 3 NC玻璃的量子效率相对较低。在这项工作中,我们提出了一种通过常规的熔融淬火技术在玻璃中制备Yb 3+掺杂的CsPbI 3量子点的简单方法。已经发现,随着Yb 3+掺杂剂的增加,CsPbI 3 NC玻璃具有蓝移发射。CsPbI 3:Yb的光致发光量子产率(PLQY)3+ NC玻璃从20%达到66.7%。并且CsPbI 3:Yb 3+ NC玻璃表现出良好的热稳定性。此外,实验结果表明,在CsPbI 3上:Yb 3+玻璃可以匹配用于制造白色LED(WLED)的商用荧光粉的特性。

更新日期:2020-06-23
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