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 journal › peer-review
Author(s)
Detail(s)
Original language | English |
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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)
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.
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