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

Synthesis of WO_n-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

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

27 Citations (Scopus)

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_2.9 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.

Original language	English
Pages (from-to)	10486-10490
Number of pages	5
Journal	Angewandte Chemie - International Edition
Volume	56
Issue number	35
DOIs	https://doi.org/10.1002/anie.201705617
Publication status	Published - 21 Aug 2017
Externally published	Yes

Keywords

light-emitting diodes
quantum dots
selenium
sulfur
tungsten

Access to Document

10.1002/anie.201705617

Cite this

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

@article{cc4bf4985d9a4aebb3b48c4750194984,

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

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 WO2.9 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.",

keywords = "light-emitting diodes, quantum dots, selenium, sulfur, tungsten",

author = "Shikui Han and Xuyong Yang and Yihan Zhu and Chaoliang Tan and Xiao Zhang and Junze Chen and Ying Huang and Bo Chen and Zhimin Luo and Qinglang Ma and Melinda Sindoro and Hao Zhang and Xiaoying Qi and Hai Li and Xiao Huang and Wei Huang and Sun, \{Xiao Wei\} and Yu Han and Hua Zhang",

note = "Publisher Copyright: {\textcopyright} 2017 Wiley-VCH Verlag GmbH \& Co. KGaA, Weinheim",

year = "2017",

month = aug,

day = "21",

doi = "10.1002/anie.201705617",

language = "English",

volume = "56",

pages = "10486--10490",

journal = "Angewandte Chemie - International Edition",

issn = "1433-7851",

publisher = "John Wiley and Sons Ltd",

number = "35",

}

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

TY - JOUR

T1 - Synthesis of WOn-WX2 (n=2.7, 2.9; X=S, Se) Heterostructures for Highly Efficient Green Quantum Dot Light-Emitting Diodes

AU - Han, Shikui

AU - Yang, Xuyong

AU - Zhu, Yihan

AU - Tan, Chaoliang

AU - Zhang, Xiao

AU - Chen, Junze

AU - Huang, Ying

AU - Chen, Bo

AU - Luo, Zhimin

AU - Ma, Qinglang

AU - Sindoro, Melinda

AU - Zhang, Hao

AU - Qi, Xiaoying

AU - Li, Hai

AU - Huang, Xiao

AU - Huang, Wei

AU - Sun, Xiao Wei

AU - Han, Yu

AU - Zhang, Hua

PY - 2017/8/21

Y1 - 2017/8/21

N2 - 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 WO2.9 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.

AB - 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 WO2.9 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.

KW - light-emitting diodes

KW - quantum dots

KW - selenium

KW - sulfur

KW - tungsten

UR - https://www.scopus.com/pages/publications/85026661425

U2 - 10.1002/anie.201705617

DO - 10.1002/anie.201705617

M3 - Article

C2 - 28675526

AN - SCOPUS:85026661425

SN - 1433-7851

VL - 56

SP - 10486

EP - 10490

JO - Angewandte Chemie - International Edition

JF - Angewandte Chemie - International Edition

IS - 35

ER -

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

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this