Frontiers of Optoelectronics, 2016, 9 (1): 87, 网络出版: 2016-10-21  

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

Green light-emitting diode based on graphene-ZnO nanowire van der Waals heterostructure
作者单位
1 College of Microelectronics, College of Information Science and Electronic Engineering, Zhejiang University, Hangzhou 310027, China
2 State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering,
3 State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou 310027, China
摘要
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 derWaals 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.
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 derWaals 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.

Zhiqian WU, Yue SHEN, Xiaoqiang LI, Qing YANG, Shisheng LIN. Green light-emitting diode based on graphene-ZnO nanowire van der Waals heterostructure[J]. Frontiers of Optoelectronics, 2016, 9(1): 87. Zhiqian WU, Yue SHEN, Xiaoqiang LI, Qing YANG, Shisheng LIN. Green light-emitting diode based on graphene-ZnO nanowire van der Waals heterostructure[J]. Frontiers of Optoelectronics, 2016, 9(1): 87.

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