title: Shifting the light emitting component from core to shell: an effective approach to improve the efficiency of light-emitting diodes based on multi-junction quantum materials.
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.
authors.affiliation: Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China. wangzj@semi.ac.cn qsc@semi.ac.cn.
authors.forename: Yanpei
authors.initials: Y
authors.lastname: Li
authors.forename: Kong
authors.initials: K
authors.lastname: Liu
authors.forename: Shudi
authors.initials: S
authors.lastname: Lu
authors.forename: Shizhong
authors.initials: S
authors.lastname: Yue
authors.forename: Dan
authors.initials: D
authors.lastname: Chi
authors.forename: Zhijie
authors.initials: Z
authors.lastname: Wang
authors.forename: Shengchun
authors.initials: S
authors.lastname: Qu
authors.forename: Zhanguo
authors.initials: Z
authors.lastname: Wang