Doping manganese into CsPb(Cl/Br)3 quantum dots glasses: Dual-color emission and super thermal stability

被引:27
作者
He, Meiling [1 ]
Cheng, Yinzi [1 ]
Shen, Linli [1 ]
Zhang, Huiling [1 ]
Shen, Chenyang [1 ]
Xiang, Weidong [1 ]
Liang, Xiaojuan [1 ]
机构
[1] Wenzhou Univ, Coll Chem & Mat Engn, Wenzhou 325035, Peoples R China
基金
中国国家自然科学基金;
关键词
Ce3+:YAG phosphor-in-glass; Mn-doped CsPb(Cl; Br)(3) QD glasses; perovskite stability; warm-WLED; HALIDE PEROVSKITE NANOCRYSTALS; LIGHT-EMITTING-DIODES; OPTICAL-PROPERTIES; WHITE LEDS; LEAD-FREE; CSPBX3; X; EFFICIENCY; DISPLAYS; BR;
D O I
10.1111/jace.15945
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
CsPbX3 (X = Cl, Br, I) perovskite quantum dots (QDs) represent bright and tunable photoluminescence, it is regrettable that the air instability and poor water resistant properties prevent their application in optoelectronic devices. At the same time, the toxicity of lead is also a major factor restricting its development. As a consequence, we demonstrate the partial replacement of Pb with Mn through conventional melt-quenching and heat-treatment method preparation of Mn-doped CsPb(Cl/Br)(3) QD glass. Mn-doped CsPb(Cl/Br)(3) QD glass exhibits high luminescent intensity like QDs. It is important that Mn-doped CsPb(Cl/Br)(3) QD glass with Dual-Color maintained the same lattice structure like Mn-doped CsPb(Cl/Br)(3) QDs, and highly homogeneous spectral characteristics of Mn luminescence. The intensity and position of this Mn-related emission are also tunable by altering the experimental parameters, such as the Pb-to-Mn feed ratio, annealing temperature. More importantly, the as-prepared orange Mn-doped CsPb(Cl/Br)(3) QD glass was employed to fabricate white LEDs combined with a commercial Ce3+:Y3Al5O12 phosphor-in-glass (Ce-PiG) on top of a InGaN blue chip. And the constructed WLEDs generate a warm white with an optimal luminous efficacy (LE) of 67.00 lm/W, a high CRI of 81.4, and a low CCT of 4902 K.
引用
收藏
页码:1090 / 1100
页数:11
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