Journal of the American Ceramic Society, Vol.103, No.1, 382-390, 2020
Synthesis and optical properties of novel mixed-metal cation CsPb1-xTixBr3-based perovskite glasses for W-LED
In this report, a mixed-metal cation-based halide perovskite (HP) CsPb1-xTixBr3 quantum dots (QDs) were first embedded in the B-Si-Zn glasses using a traditional approach of melt quenching and heat treating. A battery of test results such as photoluminescence, X-ray diffraction, and time-resolved attenuation prove that Ti ions do not destroy the properties of CsPbBr3, and they are successfully doped into CsPbBr3. At the same time, the doping of Ti ions also reduces the toxicity of lead. By altering the ratio of Pb/Ti, we determined the optimum ratio of CsPb0.7Ti0.3Br3 QDs through experimental data. Due to the excellent optical properties and stability of CsPb0.7Ti0.3Br3 QDs glass, it was designed to construct the white-light emitting diode device with tunable color coordinate, color rendering index, correlated color temperature, and a high luminous efficiency compared with CsPbBr3 QDs glass, which may be a promising candidate for the field of lighting and displays.