White Light-Emitting Diodes Based on AgInS₂/ZnS Quantum Dots with Improved Bandwidth in Visible Light Communication.
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).
State Key Laboratory on Integrated Optoelectronics and College of Electronic Science and Engineering, Jilin University, Changchun 130012, China. rc_yinuo@163.com.
Cheng
C
Ruan
State Key Laboratory on Integrated Optoelectronics and College of Electronic Science and Engineering, Jilin University, Changchun 130012, China. yuzhang@jlu.edu.cn.
Yu
Y
Zhang
State Key Laboratory on Integrated Optoelectronics and College of Electronic Science and Engineering, Jilin University, Changchun 130012, China. lumin15@mails.jlu.edu.cn.
Min
M
Lu
State Key Laboratory on Integrated Optoelectronics and College of Electronic Science and Engineering, Jilin University, Changchun 130012, China. jcy_168@126.com.
Changyin
C
Ji
State Key Laboratory on Integrated Optoelectronics and College of Electronic Science and Engineering, Jilin University, Changchun 130012, China. sunspring.518@163.com.
Chun
C
Sun
State Key Laboratory of Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China. chenxiongbin@semi.ac.cn.
Xiongbin
X
Chen
State Key Laboratory of Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China. hdchen@semi.ac.cn.
Hongda
H
Chen
Department of Chemistry, Brown University, Providence, RI 02912, USA. colvin@rice.edu.
Vicki L
VL
Colvin
State Key Laboratory on Integrated Optoelectronics and College of Electronic Science and Engineering, Jilin University, Changchun 130012, China. wyu6000@gmail.com.|Department of Chemistry and Physics, Louisiana State University, Shreveport, LA 71115, USA. wyu6000@gmail.com.
William W
WW
Yu
AgInS2/ZnS; color stability; modulation bandwidth; quantum dot; visible light communication; white light-emitting diode (WLED)