https://scholars.lib.ntu.edu.tw/handle/123456789/606919
標題: | Synthesis of ultra-stable perovskite composite quantum dots for light-emitting diodes | 作者: | Bao Z Chang Y.-C Wang H.-C Lee Y.-C Tsai T.-L RU-SHI LIU |
關鍵字: | Perovskite;Silica;Silicon;Sintering;Composite quantum dots;Green process;In-situ X-ray diffraction;Lightemitting diode;Luminescent material;Optical characteristics;Phase transformation process;Simple++;Sintering condition;X-ray diffraction measurements;Semiconductor quantum dots | 公開日期: | 2021 | 卷: | 23 | 期: | 22 | 起(迄)頁: | 8871-8877 | 來源出版物: | Green Chemistry | 摘要: | CsPbX3 (X = Cl, Br, and I), as a potential luminescent material with excellent optical characteristics, has attracted researchers for several years but it is difficult to use it commercially due to its low stability. Herein, a simple green process was successfully optimized without using any solvents for synthesizing an ultra-stable CsPbBr3@SiO2 composite. The phase transformation process in obtaining the CsPbBr3@SiO2 composite was resolved according to in situ X-ray diffraction measurements. Based on the results, the best sintering condition for the CsPbBr3@SiO2 composite was obtained, realizing the highest photoluminescence quantum yield of 15.5%. The obtained CsPbBr3@SiO2 exhibited a narrowband green emission and achieved ultra-high stability with an intensity of 100% being maintained after the 196 h test under double-85 conditions. Moreover, it maintained the emission intensity and color coordinate during the 1000 h irradiation test in the light-emitting diode package. This excellent performance revealed the great potential of the CsPbBr3@SiO2 composite for commercialization in backlight applications. ? 2021 The Royal Society of Chemistry. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85119837308&doi=10.1039%2fd1gc03265h&partnerID=40&md5=166e1b0b6a9f09bb90844a88de4d1210 https://scholars.lib.ntu.edu.tw/handle/123456789/606919 |
ISSN: | 14639262 | DOI: | 10.1039/d1gc03265h |
顯示於: | 化學系 |
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