Synthesis of Eco-Friendly High PL Lifespan Manganese-Doped CuInZnS/ZnS QDs for White LED Applications

被引:1
|
作者
Abib, Mukerem Helil [1 ]
Chen, Taotao [1 ]
Xu, Enze [1 ]
Wang, Man [1 ]
Jiang, Yang [1 ,2 ]
机构
[1] Hefei Univ Technol, Sch Mat Sci & Engn, Hefei 230009, Peoples R China
[2] Soochow Univ, Jiangsu Key Lab Carbon Based Funct Mat & Devices, Suzhou 215123, Peoples R China
关键词
Mn-Doped CulnZnS Quantum Dot; Optical Properties; White LEDs; PL Decay Lifespan; QUANTUM DOTS; OPTICAL-PROPERTIES; CUINS2; NANOCRYSTALS; PHOTOLUMINESCENCE;
D O I
10.1166/jnn.2020.18585
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Environmentally friendly and long PL lifespan Mn-doped CuInZnS (Mn:CIZS) and CuInZnS/ZnS (Mn:CIZS/ZnS) QDs, with respective red and yellow emissions, were synthesized using nontoxic precursors via a facile dual-step process based on the one-pot method. The resulting Mn:CIZS and Mn:CIZS/ZnS QDs exhibited confirmed strong red and yellow photoluminescence emissions at approximately 654 nm and 580 nm, respectively. The measured PL decay lifespan for the Mn: CIZS QDs is 2.52 mu s due to well-organized surface passivation through the ZnS shell; the average PL lifespan for the Mn:CIZS/ZnS QDs is extended to 6.28 mu s. Moreover, the WLEDs were composed of the Mn:CIZS/ZnS QDs. The resulting WLEDs offered admirable optical attributes, such as an excellent Ra of 89, a low Tc of 5075 K and radiant white light emanation at 60 mA functional current. Therefore, the outputs highlight the Mn:CIZS/ZnS QDs as hopeful cadmium-free resources for the interest of optoelectronics exploration.
引用
收藏
页码:6286 / 6294
页数:9
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