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

Shikui Han; Xuyong Yang; Yihan Zhu; Chaoliang Tan; 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; Hua Zhang

doi:10.1002/anie.201705617

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 language	English
Pages (from-to)	10486-10490
Journal / Publication	Angewandte Chemie - International Edition
Volume	56
Issue number	35
Online published	4 Jul 2017
Publication status	Published - 21 Aug 2017
Externally published	Yes

Link(s)

DOI	DOI https://doi.org/10.1002/anie.201705617 Final Published version
	Check@CityULib
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-85026661425&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(7b376de7-9412-4bed-9a06-955195b29b4b).html

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 WO_n-WX₂ (n=2.7, 2.9; X=S, Se) heterostructures by sulfurization or selenization of WO_n nanomaterials. The WO_n-WX₂ heterostructures are composed of WO_2.9 nanoparticles (NPs) or WO_2.7 nanowires (NWs) grown together with single- or few-layer WX₂ nanosheets (NSs). As a proof-of-concept application, the WO_n-WX₂ heterostructures are used as the anode interfacial buffer layer for green quantum dot light-emitting diodes (QLEDs). The QLED prepared with WO_2.9NP-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)

[ RIS ] [ BibTeX ]

Synthesis of WO_n-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 journal › peer-review

Han, S, Yang, X, Zhu, Y, Tan, C, Zhang, X, Chen, J, Huang, Y, Chen, B, Luo, Z, Ma, Q, Sindoro, M, Zhang, H, Qi, X, Li, H, Huang, X, Huang, W, Sun, XW, Han, Y & Zhang, H 2017, 'Synthesis of WO_n-WX₂ (n=2.7, 2.9; X=S, Se) Heterostructures for Highly Efficient Green Quantum Dot Light-Emitting Diodes', Angewandte Chemie - International Edition, vol. 56, no. 35, pp. 10486-10490. https://doi.org/10.1002/anie.201705617

Han, S., Yang, X., Zhu, Y., Tan, C., Zhang, X., Chen, J., Huang, Y., Chen, B., Luo, Z., Ma, Q., Sindoro, M., Zhang, H., Qi, X., Li, H., Huang, X., Huang, W., Sun, X. W., Han, Y., & Zhang, H. (2017). Synthesis of WO_n-WX₂ (n=2.7, 2.9; X=S, Se) Heterostructures for Highly Efficient Green Quantum Dot Light-Emitting Diodes. Angewandte Chemie - International Edition, 56(35), 10486-10490. https://doi.org/10.1002/anie.201705617

Han S, Yang X, Zhu Y, Tan C, Zhang X, Chen J et al. Synthesis of WO_n-WX₂ (n=2.7, 2.9; X=S, Se) Heterostructures for Highly Efficient Green Quantum Dot Light-Emitting Diodes. Angewandte Chemie - International Edition. 2017 Aug 21;56(35):10486-10490. Epub 2017 Jul 4. doi: 10.1002/anie.201705617

Han, Shikui ; Yang, Xuyong ; Zhu, Yihan et al. / Synthesis of WO_n-WX₂ (n=2.7, 2.9; X=S, Se) Heterostructures for Highly Efficient Green Quantum Dot Light-Emitting Diodes. In: Angewandte Chemie - International Edition. 2017 ; Vol. 56, No. 35. pp. 10486-10490.