White Light-Emitting Diodes Based on AgInS2/ZnS Quantum Dots with Improved Bandwidth in Visible Light Communication

被引：62
作者：
Ruan, Cheng [1 ,2 ]
Zhang, Yu [1 ,2 ]
Lu, Min [1 ,2 ]
Ji, Changyin [1 ,2 ]
Sun, Chun [1 ,2 ]
Chen, Xiongbin [3 ]
Chen, Hongda [3 ]
Colvin, Vicki L. [4 ]
Yu, William W. [1 ,2 ,5 ]
机构：
[1] Jilin Univ, State Key Lab Integrated Optoelect, Changchun 130012, Peoples R China
[2] Jilin Univ, Coll Elect Sci & Engn, Changchun 130012, Peoples R China
[3] Chinese Acad Sci, Inst Semicond, State Key Lab Integrated Optoelect, Beijing 100083, Peoples R China
[4] Brown Univ, Dept Chem, Providence, RI 02912 USA
[5] Louisiana State Univ, Dept Chem & Phys, Shreveport, LA 71115 USA
来源：
NANOMATERIALS | 2016年 / 6卷 / 01期
基金：
美国国家科学基金会; 中国国家自然科学基金;
关键词：
white light-emitting diode (WLED); AgInS2; ZnS; quantum dot; color stability; modulation bandwidth; visible light communication; OPTICAL-PROPERTIES; NANOCRYSTALS; PHOSPHORS; YAG; NANOPARTICLES; DEPENDENCE; EMISSION; LIFETIME; CHIPS;
D O I：
10.3390/nano6010013
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Quantum dot white light-emitting diodes (QD-WLEDs) were fabricated from green- and red-emitting AgInS2/ZnS core/shell QDs coated on GaN LEDs. Their electroluminescence (EL) spectra were measured at different currents, ranging from 50 mA to 400 mA, and showed good color stability. The modulation bandwidth of previously prepared QD-WLEDs was confirmed to be much wider than that of YAG:Ce phosphor-based WLEDs. These results indicate that the AgInS2/ZnS core/shell QDs are good color-converting materials for WLEDs and they are capable in visible light communication (VLC).
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页数：8
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