Frontiers of Optoelectronics, Volume. 9, Issue 1, 87(2016)
Green light-emitting diode based on graphene-ZnO nanowire van der Waals heterostructure
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.
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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[J]. Frontiers of Optoelectronics, 2016, 9(1): 87
Category: RESEARCH ARTICLE
Received: Jan. 6, 2016
Accepted: Jan. 14, 2016
Published Online: Oct. 21, 2016
The Author Email: SHEN Yue (shenyue1213@hust.edu.cn)