@article{Liu2024, 
author = {Mingrui Liu and Chenhui Wang and Peng Huang and Jinhua He and Muhammad Ramzan and Haizheng Zhong},
title = {Pure-blue emissive ZnSe/CdxZn1−xS/ZnS quantum dots with type-II core-shell structure for display application},
year = {2024},
journal = {Nano Research},
volume = {17},
number = {12},
pages = {10476-10482},
keywords = {quantum dots, display, blue emitter, type-II, core shell},
url = {https://www.sciopen.com/article/10.1007/s12274-024-7106-3},
doi = {10.1007/s12274-024-7106-3},
abstract = {Blue emissive quantum dots are key materials in fabricating quantum-dot light-emitting diodes for display applications. Up to date, most of the previous blue emissive quantum dots are based on quantum dots with type-I core-shell structure. In this work, we report pure-blue emissive ZnSe/CdxZn1−xS/ZnS quantum dots with type-II core-shell structure, which show high photoluminescence quantum yield over 90%. The type-II structure was investigated by applying time-resolved photoluminescence and transient absorption measurements, illustrating the extended photoluminescence decay lifetime of ZnSe/CdxZn1−xS quantum dots as well as the transition of bleaching peak from the valence band of ZnSe to the conduction band of CdZnS. We further fabricated ZnSe/CdxZn1−xS/ZnS quantum dots based electroluminescence devices, achieving a maximum external quantum efficiency of 6.7% and a maximum luminance of 39,766 cd·m−2.}
}