Synthesis and optical properties of novel mixed‐metal cation CsPb_1−xTi_xBr₃‐based perovskite glasses for W‐LED

Abstract

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.

High-entropy alloy screening for halide perovskites

“…, CsPbI 3 's metastable polymorphs). 1,2 There are more reports of single-phase inorganic HEAHP (Table S4, ESI†) 71–219 and hybrid organic–inorganic HEAHP (Table S5, ESI†), 220–285 but more investigation into single-phase boundaries is needed to confirm the broadscale applicability of UCV for screening HEAHP.…”

Short review on recent progress in Mn4+‐activated oxide phosphors for indoor plant light‐emitting diodes

“…Chen et al . [ 24 ] fabricated LED with the use of La 2 MgGeO 6 (LMGO):Mn 4+ ,Dy 3+ phosphor, and 460‐nm blue LED excitation chip (Figure 4). To study the effect of light treatment of LED fabricated by LMGO:Mn 4+ ,Dy 3+ LED (marked S1) on plant cultivation, Wedelia chinensis plants were used for cultivation experiments.…”

“…It will also overcome the difficulties which are encountered during seasonal or climatic changes. [ 23–25 ] Among the various solid‐state lighting sources, the phosphor‐converted LED are a favorable choice for indoor plant cultivation. This is due to their long life, lower power consumption, economical and low‐cost production, high luminescence efficiency, and environment‐friendly nature.…”

Люминесцентная Керамика На Основе Иттрий-Алюминиевого Граната, Полученная Традиционным Спеканием В Воздушной Атмосфере

“…УДК 620.22(063)-535 https://doi.org /10.21517/1992-7223-2019-3-4-26-31 ВВЕДЕНИЕ Белые светоизлучающие диоды широко применяются в различных коммерческих и промышленных системах освещения, поскольку их использование экономически эффективнее, чем использование традиционных источников света [1]. Современные коммерческие белые светодиоды состоят из кристалла на основе нитрида индия-галлия (InGaN, излучает синий свет) и люминофора на основе иттрий-алюминиевого граната, активированного ионами церия (YAG:Ce), диспергированного в оптически прозрачном покрытии, состоящем из кремнийорганической пластмассы, полимерной или эпоксидной смолы [1,2].…”