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Wiley, Angewandte Chemie International Edition, 35(56), p. 10486-10490

DOI: 10.1002/anie.201705617

Wiley, Angewandte Chemie, 35(129), p. 10622-10626

DOI: 10.1002/ange.201705617

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Synthesis of WO<sub>n</sub>‐WX<sub>2</sub> (n=2.7, 2.9; X=S, Se) Heterostructures for Highly Efficient Green Quantum Dot Light‐Emitting Diodes

Journal article published in 2017 by Shikui Han, Xuyong Yang, Yihan Zhu ORCID, Chaoliang Tan ORCID, Xiao Zhang ORCID, Junze Chen, Ying Huang, Bo Chen, Zhimin Luo, Qinglang Ma, Melinda Sindoro, Hao Zhang, Xiaoying Qi, Hai Li, Xiao Huang and other authors.
This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Abstract

AbstractPreparation 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 WO2.9 NP‐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.