Environmentally friendly CsPbBr3 QDs multicomponent glass with super-stability for optoelectronic devices and up-converted lasing. Issue 8 (July 2020)

• Record Type: Journal Article
• Authors: Li, Shasha; Nie, Lanjian; Ma, Shumin; Yao, Guanpeng; Zeng, Fanming; Wang, XinYu; Sun, Chunyi; Hu, Guangxu; Su, Zhongmin
• Is Part Of: Journal of the European Ceramic Society. Volume 40:Issue 8(2020)
• Page Start: 3270
• Page End: 3278
• Publication Date: 2020-07
• Subjects: CsPbBr3 -- Glass -- Temperature sensor -- White light-emitting diode -- Up-Conversion luminescence; Ceramic materials -- Periodicals; Composite materials -- Periodicals; Matériaux céramiques -- Périodiques; Composites -- Périodiques; Ceramic materials; Composite materials; Periodicals; Electronic journals; 666.05
• DOI: 10.1016/j.jeurceramsoc.2020.02.056
• Languages: English
• ISSNs: 0955-2219

Abstract

Highlights: QDs glass displays a high exciton binding energy of 362 ± 18 meV. QDs glass exhibits excellent stability without lead contamination. QDs glass is a potential candidate for temperature sensor. QDs glass without rare earth realize up-conversion luminescence with 980-nm excitation for the first time. Abstract: Ultra-stable CsPbBr3 perovskite quantum dots (QDs) multicomponent glass with high transmittance was prepared by melt-quenching heat treatment. The average diameter of the CsPbBr3 QDs was ∼1.96 nm. The resulting glass displayed a high exciton binding energy of 362 ± 18 meV. Notably, these glass-encapsulated materials exhibited excellent resistance to heat, light, and water, superior to that of previously reported perovskite-based materials, and underwent an extremely low rate of Pb leaching during water immersion. Based on the glass, a high-performance white light-emitting diode (WLED) device was fabricated with Commission Internationale de L'Eclairage (CIE) coordinates of (0.3156, 0.3326) and color gamut of ∼113 % National Television Standards Committee (NTSC). The CsPbBr3 QDs glass without rare earth elements further acted as an optical gain medium, realizing up-conversion lasing with 980-nm laser excitation for the first time. The reversible linear fluorescence response indicates that the glass could be a potential candidate for temperature sensors.