Ag Nanoparticles Optimized the Optical Properties and Stability of CsPbBrI₂ Glass for High Quality Backlight Display

Abstract

All-inorganic perovskite CsPbX 3 (X = Cl, Br, I) nanocrystals (NCs) have generated significant attention in the emerging display industry because of their narrow-band emission, high color purity, and facile preparation and processing. By controlling the deposition of Ag nanoparticles in the B−Si−Zn glass matrix, CsPbBrI 2 NC glass with significantly enhanced photoluminescence (PL) intensity (about 6.3 times) was successfully prepared, and the photoluminescence quantum yield (PLQY) is increased from 12.4% to 36.9%. More meaningfully, the high-performance glass powders were incorporated into polystyrene (PS) films through solution and blending techniques, and the films prepared by the latter had superior color coordinates and environmental stability, particularly the intense blue light stability. Under conditions of 60 °C, 90% relative humidity (RH), and 10 000 nit blue light irradiation for 40 d, the PL intensity decline rate of blended film does not exceed 5%. In addition, the light conversion film based on Ag@CsPbBrI 2 glass with CsPbBr 3 glass powders exhibits a wide color gamut of 125.2% of the NTSC 1953 standard, which shows richer colors than commercial displays on the liquid crystal display (LCD) screen, further opening the space for the development of the quantum dot film industry.

High Stable Mechanoluminescence from TbBO3 GCs for Stress Safety Monitoring

“…It is reported that amorphous is a traditional transparent medium [14] with excellent high environmental stability [15] and optical properties. [16] Its excellent optical waveguide media has become an indispensable part of modern communication technology, [17] leveraging the waveguide effect of light transmission within the glass to rapidly convey information.…”