Green light-emitting diode based on graphene-ZnO nanowire van der Waals heterostructure

Zhiqian WU, Yue SHEN, Xiaoqiang LI, Qing YANG, Shisheng LIN

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PDF(795 KB)
Front. Optoelectron. ›› 2016, Vol. 9 ›› Issue (1) : 87-92. DOI: 10.1007/s12200-016-0596-1
RESEARCH ARTICLE

Green light-emitting diode based on graphene-ZnO nanowire van der Waals heterostructure

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Abstract

The rectifying behavior between graphene and semiconductors makes novel type of solar cells, photodetectors and light emitting diodes (LEDs). The interface between graphene and ZnO is the key for the performance of the optoelectronic devices. Herein, we find that green light emission is very strong for the forward biased graphene/ZnO nanowire van der Waals heterostructure. We correlated the green light emission with the surface defects locating at the ZnO nanowire surface through the detailed high resolution transmission electron microscopy and photoluminescence measurements. We pointed out engineering the surface of ZnO nanowires could bring a dimension of designing graphene/ZnO LEDs, which could be extended to other types of graphene/semiconductor heterostructure based optoelectronic devices.

Keywords

ZnO nanowire / van der Waals heterostructure / light-emitting diode (LED)

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Zhiqian WU, Yue SHEN, Xiaoqiang LI, Qing YANG, Shisheng LIN. Green light-emitting diode based on graphene-ZnO nanowire van der Waals heterostructure. Front. Optoelectron., 2016, 9(1): 87‒92 https://doi.org/10.1007/s12200-016-0596-1

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Acknowledgements

The authors thank the support from the National Natural Science Foundation of China (Grant Nos. 51202076 and 51202216) and X. Q. Li thanks the support from the Postdoctoral Science Foundation of China (No. 111400-X91305).

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2014 Higher Education Press and Springer-Verlag Berlin Heidelberg
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