Abstract
Pure CsPbBr3 and CsPbI3 perovskite nanocrystals are nucleated in the borogermanate glass. Nanocrystals precipitation in glass are controlled via isothermal treatment at temperatures above Tg by adjusting the temperature and duration starting from 15 min. X-ray diffraction data and optical measurements have confirmed the formation of 5–8 nm sized CsPbBr3 nanocrystals and 6–15 nm sized CsPbI3 nanocrystals. Wherein, the photoluminescence of lead cesium bromide perovskite is tuned in the 490–530 nm range, and the luminescence of iodide perovskite is changed in the 640–740 nm range. The maximum luminescence quantum yield of pure CsPbI3 perovskites is 19%. Water, climate and acid resistance tests show borogermanate glasses with perovskite nanocrystals are compatible with commercial dense crowns.
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