Article Preparation and luminescent performances of tellurite glass coated CsPbBr3@glass film for remote LED color converter

Huanhuan Zhang ; Jialing Ou ; Guoying Zhao ; Jingshan Hou ; Yufeng Liu ; Xin Qiao ; Zhongzhi Wang ; Ji-Guang Li SAMURAI ORCID (National Institute for Materials ScienceROR) ; Yongzheng Fang

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Huanhuan Zhang, Jialing Ou, Guoying Zhao, Jingshan Hou, Yufeng Liu, Xin Qiao, Zhongzhi Wang, Ji-Guang Li, Yongzheng Fang. Preparation and luminescent performances of tellurite glass coated CsPbBr3@glass film for remote LED color converter. JOURNAL OF LUMINESCENCE. 2023, 257 (), 119681-119681. https://doi.org/10.1016/j.jlumin.2023.119681
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(abstract)

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.

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Keyword: Remote glass film, CsPbBr3 perovskite quantum dot, High quantum yield, Double encapsulation

Date published: 2023-01-06

Publisher: Elsevier BV

Journal:

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

Funding:

Manuscript type: Author's version (Accepted manuscript)

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

First published URL: https://doi.org/10.1016/j.jlumin.2023.119681

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Updated at: 2025-01-07 16:30:44 +0900

Published on MDR: 2025-01-07 16:30:45 +0900

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