Synthesis of WOn-WX2 (n=2.7, 2.9; X=S, Se) Heterostructures for Highly Efficient Green Quantum Dot Light-Emitting Diodes

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

25 Scopus Citations
View graph of relations

Author(s)

  • Shikui Han
  • Xuyong Yang
  • Yihan Zhu
  • Xiao Zhang
  • Junze Chen
  • Ying Huang
  • Bo Chen
  • Zhimin Luo
  • Qinglang Ma
  • Melinda Sindoro
  • Hao Zhang
  • Xiaoying Qi
  • Hai Li
  • Xiao Huang
  • Wei Huang
  • Xiao Wei Sun
  • Yu Han

Detail(s)

Original languageEnglish
Pages (from-to)10486-10490
Journal / PublicationAngewandte Chemie - International Edition
Volume56
Issue number35
Online published4 Jul 2017
Publication statusPublished - 21 Aug 2017
Externally publishedYes

Abstract

Preparation of two-dimensional (2D) heterostructures is important not only fundamentally, but also technologically for applications in electronics and optoelectronics. Herein, we report a facile colloidal method for the synthesis of WOn-WX2 (n=2.7, 2.9; X=S, Se) heterostructures by sulfurization or selenization of WOn nanomaterials. The WOn-WX2 heterostructures are composed of WO2.9 nanoparticles (NPs) or WO2.7 nanowires (NWs) grown together with single- or few-layer WX2 nanosheets (NSs). As a proof-of-concept application, the WOn-WX2 heterostructures are used as the anode interfacial buffer layer for green quantum dot light-emitting diodes (QLEDs). The QLED prepared with WO2.9NP-WSe2 NS heterostructures achieves external quantum efficiency (EQE) of 8.53 %. To our knowledge, this is the highest efficiency in the reported green QLEDs using inorganic materials as the hole injection layer.

Research Area(s)

  • light-emitting diodes, quantum dots, selenium, sulfur, tungsten

Citation Format(s)

Synthesis of WOn-WX2 (n=2.7, 2.9; X=S, Se) Heterostructures for Highly Efficient Green Quantum Dot Light-Emitting Diodes. / Han, Shikui; Yang, Xuyong; Zhu, Yihan et al.
In: Angewandte Chemie - International Edition, Vol. 56, No. 35, 21.08.2017, p. 10486-10490.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review