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 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

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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.

Original language	English (US)
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 https://doi.org/10.1002/ange.201705617
State	Published - Jul 24 2017

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: This work was supported by MOE under AcRF Tier 2 (ARC 19/15, No. MOE2014-T2-2-093; MOE2015-T2-2-057; MOE2016-T2-2-103) and AcRF Tier 1 (2016-T1-001-147; 2016-T1-002-051), and NTU under Start-Up Grant (M4081296.070.500000) in Singapore. It was also supported by the Joint Research Fund for Overseas Chinese, Hong Kong and Macao Scholars (Grant No. 51528201), the National Natural Science Foundation of China (Grant No. 51322202, 21571101) and the Natural Science Foundation of Jiangsu Province in China (Grant No. BK20130927, BK20161543). H.L. thanks the financial support from the Natural Science Foundation of the Jiangsu Higher Education Institutions of China (Grant No. 15KJB430016). X.W.S. thanks the financial support from National Science and Technology Major Project of the Ministry of Science and Technology of China (No. 2016YFB0401702) and National Natural Science Foundation of China (No. 61674074). X.Y. thanks the financial support from the Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning (No. TP2015037). We would like to acknowledge the Facility for Analysis, Characterization, Testing and Simulation, Nanyang Technological University, Singapore, for use of their electron microscopy facilities.

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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 Won-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, https://doi.org/10.1002/ange.201705617

@article{64a83935fd1b490b85867e27f2d51d97,

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.",

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 = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: This work was supported by MOE under AcRF Tier 2 (ARC 19/15, No. MOE2014-T2-2-093; MOE2015-T2-2-057; MOE2016-T2-2-103) and AcRF Tier 1 (2016-T1-001-147; 2016-T1-002-051), and NTU under Start-Up Grant (M4081296.070.500000) in Singapore. It was also supported by the Joint Research Fund for Overseas Chinese, Hong Kong and Macao Scholars (Grant No. 51528201), the National Natural Science Foundation of China (Grant No. 51322202, 21571101) and the Natural Science Foundation of Jiangsu Province in China (Grant No. BK20130927, BK20161543). H.L. thanks the financial support from the Natural Science Foundation of the Jiangsu Higher Education Institutions of China (Grant No. 15KJB430016). X.W.S. thanks the financial support from National Science and Technology Major Project of the Ministry of Science and Technology of China (No. 2016YFB0401702) and National Natural Science Foundation of China (No. 61674074). X.Y. thanks the financial support from the Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning (No. TP2015037). We would like to acknowledge the Facility for Analysis, Characterization, Testing and Simulation, Nanyang Technological University, Singapore, for use of their electron microscopy facilities.",

year = "2017",

month = jul,

day = "24",

doi = "10.1002/anie.201705617",

language = "English (US)",

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 Won-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, https://doi.org/10.1002/ange.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

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: This work was supported by MOE under AcRF Tier 2 (ARC 19/15, No. MOE2014-T2-2-093; MOE2015-T2-2-057; MOE2016-T2-2-103) and AcRF Tier 1 (2016-T1-001-147; 2016-T1-002-051), and NTU under Start-Up Grant (M4081296.070.500000) in Singapore. It was also supported by the Joint Research Fund for Overseas Chinese, Hong Kong and Macao Scholars (Grant No. 51528201), the National Natural Science Foundation of China (Grant No. 51322202, 21571101) and the Natural Science Foundation of Jiangsu Province in China (Grant No. BK20130927, BK20161543). H.L. thanks the financial support from the Natural Science Foundation of the Jiangsu Higher Education Institutions of China (Grant No. 15KJB430016). X.W.S. thanks the financial support from National Science and Technology Major Project of the Ministry of Science and Technology of China (No. 2016YFB0401702) and National Natural Science Foundation of China (No. 61674074). X.Y. thanks the financial support from the Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning (No. TP2015037). We would like to acknowledge the Facility for Analysis, Characterization, Testing and Simulation, Nanyang Technological University, Singapore, for use of their electron microscopy facilities.

PY - 2017/7/24

Y1 - 2017/7/24

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.

UR - http://hdl.handle.net/10754/625662

UR - http://onlinelibrary.wiley.com/doi/10.1002/anie.201705617/full

UR - http://www.scopus.com/inward/record.url?scp=85026661425&partnerID=8YFLogxK

U2 - 10.1002/anie.201705617

DO - 10.1002/anie.201705617

M3 - Article

C2 - 28675526

SN - 1433-7851

VL - 56

SP - 10486

EP - 10490

JO - Angewandte Chemie International Edition

JF - Angewandte Chemie International Edition

IS - 35

ER -

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

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