title: Super color purity green quantum dot light-emitting diodes fabricated by using CdSe/CdS nanoplatelets.
abstract: Colloidal nanoplatelets (NPLs) have recently been introduced as semiconductor emissive materials for the fabrication of quantum dot light-emitting diodes (QLED) on account of their ultra-narrow photoluminescence (PL) linewidth. In this paper, we report a multilayer all solution-processed green QLED based on colloidal CdSe/CdS core/shell NPLs with a narrow PL full-width-at-half-maximum (FWHM) of 12 nm. Our characterization results reveal that this kind of NPL containing QLED exhibit a low operating voltage of 2.25 V and a maximum luminance up to 33 000 cd m(-2), and peak external quantum efficiency (EQE) of 5%, corresponding to 12.5 cd A(-1) in luminance efficiency. Particularly, these devices show ultra-high color purity for electroluminescence (EL) with FWHM of 14 nm. As extremely narrow EL and ultra-pure color is highly attractive in the applications of LED industries, this work signifies the unique potential application of one new class of colloidal core/shell NPLs in achieving bright and efficient LEDs with superior color saturation.
authors.affiliation: Key Laboratory for Special Functional Materials of Ministry of Education, Henan University, Kaifeng 475004, China. shenhuaibin@henu.edu.cn lsli@henu.edu.cn.
authors.forename: Fengjuan
authors.initials: F
authors.lastname: Zhang
authors.affiliation: Key Laboratory for Special Functional Materials of Ministry of Education, Henan University, Kaifeng 475004, China. shenhuaibin@henu.edu.cn lsli@henu.edu.cn.
authors.forename: Shujie
authors.initials: S
authors.lastname: Wang
authors.affiliation: Key Laboratory for Special Functional Materials of Ministry of Education, Henan University, Kaifeng 475004, China. shenhuaibin@henu.edu.cn lsli@henu.edu.cn.
authors.forename: Lei
authors.initials: L
authors.lastname: Wang
authors.affiliation: Key Laboratory for Special Functional Materials of Ministry of Education, Henan University, Kaifeng 475004, China. shenhuaibin@henu.edu.cn lsli@henu.edu.cn.
authors.forename: Qingli
authors.initials: Q
authors.lastname: Lin
authors.affiliation: Key Laboratory for Special Functional Materials of Ministry of Education, Henan University, Kaifeng 475004, China. shenhuaibin@henu.edu.cn lsli@henu.edu.cn.
authors.forename: Huaibin
authors.initials: H
authors.lastname: Shen
authors.affiliation: Department of Materials Science and Engineering, University of Florida, Gainesville, FL 32611, USA. jxue@mse.ufl.edu.
authors.forename: Weiran
authors.initials: W
authors.lastname: Cao
authors.affiliation: Department of Materials Science and Engineering, University of Florida, Gainesville, FL 32611, USA. jxue@mse.ufl.edu.
authors.forename: Chenchen
authors.initials: C
authors.lastname: Yang
authors.affiliation: Key Laboratory for Special Functional Materials of Ministry of Education, Henan University, Kaifeng 475004, China. shenhuaibin@henu.edu.cn lsli@henu.edu.cn.
authors.forename: Hongzhe
authors.initials: H
authors.lastname: Wang
authors.affiliation: Department of Materials Science and Engineering, University of Florida, Gainesville, FL 32611, USA. jxue@mse.ufl.edu.
authors.forename: Long
authors.initials: L
authors.lastname: Yu
authors.affiliation: Key Laboratory for Special Functional Materials of Ministry of Education, Henan University, Kaifeng 475004, China. shenhuaibin@henu.edu.cn lsli@henu.edu.cn.
authors.forename: Zuliang
authors.initials: Z
authors.lastname: Du
authors.affiliation: Department of Materials Science and Engineering, University of Florida, Gainesville, FL 32611, USA. jxue@mse.ufl.edu.
authors.forename: Jiangeng
authors.initials: J
authors.lastname: Xue
authors.affiliation: Key Laboratory for Special Functional Materials of Ministry of Education, Henan University, Kaifeng 475004, China. shenhuaibin@henu.edu.cn lsli@henu.edu.cn.
authors.forename: Lin Song
authors.initials: LS
authors.lastname: Li