Shifting the light emitting component from core to shell: an effective approach to improve the efficiency of
Yanpei Li1, Kong Liu, Shudi Lu
1Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China. wangzj@semi.ac.cn qsc@semi.ac.cn.
Abstract:
Herein, using the light emitting component as the inner shell, we construct an advanced quantum-dot-quantum-well structure, ZnCdS/CdSe/CdZnSeS/ZnS, and use it for the fabrication of a light-emitting-diode. In comparison with the device containing conventional structured quantum dots, CdSe/CdZnSeS/ZnS, the advanced device possesses a superior performance in aspects of luminance, current efficiency, turn-on voltage and emitting wavelength tunability. Therefore, this paper indicates a promising strategy for the fabrication of light emitting devices based on quantum materials.
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