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説明:

We know that perovskite quantum dot (PQD) glass is one of the effective ways to achieve high stability, high reliability and high weather resistance. However, quantum dot glass is still unable to achieve completely uniform crystallization as a whole, so quantum dot glass has to be used in the form of powder by mixing glue. The use of organic matter leads to the problems of heat accumulation and stability. In this work, the concept of double cladding encapsulation was realized to solve the above problems in the application of quantum dot glass, and the remote inorganic fluorescent film is prepared. CsPbBr3 PQDs embedded in borosilicate glass (PQDs@glass) were prepared using traditional melting-quenching and heat-treatment processes. By optimizing the raw material composition and melting conditions, excellent PQDs@glass were obtained, and its photoluminescence quantum yield (PLQY) was as high as 88.06%. The CsPbBr3 PQDs embedded borosilicate glass has been dispersed in tellurite glass film again along with color-compensatory red-emitting nitride phosphor, which is a doubly encapsulated system with inorganic glass matrixes to improve stability and color-tunability. A series of prototypes light-emitting diode devices were assembled based on the as-made doubly encapsulated glass film with a commercial blue chip, resulting in bright white light luminescence at a color temperature of 3920 K and a high color rendering index of 87.2.

権利情報:

• Creative Commons BY-NC-ND Attribution-NonCommercial-NoDerivs 4.0 International
  

キーワード: Remote glass film, CsPbBr3 perovskite quantum dot, High quantum yield, Double encapsulation

刊行年月日: 2023-01-06

出版者: Elsevier BV

掲載誌:

• JOURNAL OF LUMINESCENCE (ISSN: 00222313) vol. 257 p. 119681-119681

研究助成金:

原稿種別: 著者最終稿 (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.4341

公開URL: https://doi.org/10.1016/j.jlumin.2023.119681

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更新時刻: 2025-01-07 16:30:44 +0900

MDRでの公開時刻: 2025-01-07 16:30:45 +0900