Engineering the crystallization behavior of CsPbBr3 quantum dots in borosilicate glass through modulating the glass network modifiers for wide-color-gamut displays |
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| Affiliation: | 1. School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun 130022, China;2. Jilin Provincial Science and Technology Innovation Center of Optical Materials and Chemistry, Changchun, 130022, China;3. National Research Tomsk Polytechnic University, Lenin Avenue 30, 634050 Tomsk, Russia;1. School of Science, Shanghai Institute of Technology, Shanghai 201418, China;2. Academy for Engineering and Technology, Institute of Future Lighting, Fudan University, Shanghai, 200433, China;3. Avenida da Universidade, Institute of Applied Physics and Materials Engineering, University of Macau, Taipa, Macau 999078, China;4. School of Material Science and Engineering, Shanghai Institute of Technology, Shanghai 201418, China;5. Jiangsu PaiRui Power Co., Ltd, China;6. National Semiconductor Lighting Application System Engineering Technology Research Center, Shanghai 201418, China |
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| Abstract: | The in-situ growth of CsPbBr3 perovskite quantum dots (QDs) inside glass has been regarded as an alternative approach to improve their stability. Alkaline-earth metal oxides has multiple effects on the structure of the glass network. Herein, four types of alkaline-earth metal oxides are introduced into borosilicate glasses to modulate glass network structure, which has quite different effects on the crystallization behavior of CsPbBr3 QDs. The reason can be ascribed to the different impacts of alkaline-earth metal on phase separation, nucleation, and growth procedure. Moreover, CsPbBr3 QDs embedded in glass (CsPbBr3 QD@glass) exhibit superior thermostability and photostability compared with CsPbBr3 QDs powder. Finally, a white light-emitting diode achieving 124% of National Television System Committee (NTSC) gamut is fabricated using the CsPbBr3 QD@glass, K2SiF6:Mn4+ phosphor film, and blue chip-on-board. This work provides a reference for modulating the glass network modifiers to regulate the crystallization behavior of perovskite QDs. |
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| Keywords: | Glass-ceramic Alkaline-earth Crystallization behavior Stability |
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