A high-response ultraviolet photodetector by integrating GaN nanoparticles with graphene

doi:10.1016/j.jallcom.2021.159281

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	A high-response ultraviolet photodetector by integrating GaN nanoparticles with graphene
	Y. Chen; Y. Wu; J. Ben; K. Jiang; Y. Jia; S. Zhang; H. Zang; Z. Shi; B. Duan; X. Sun and D. Li
	2021
发表期刊	Journal of Alloys and Compounds
ISSN	9258388
卷号	868
摘要	A new type of ultraviolet photodetector was fabricated by integrating GaN nanoparticles as the absorber and graphene as the carrier transport channel. The GaN nanoparticles prepared by metal-organic chemical vapor deposition exhibited the average diameter, height and density of 87.2 nm, 18.4 nm and 5 109/cm2, respectively. The chemical component and optical properties of the GaN nanoparticles were also confirmed and discussed. The monolayer graphene film was transferred onto GaN nanoparticles for the detector fabrication, which possessed the high crystalline quality and uniform coverage. Since the GaN nanoparticles providing trap states for the photo-generated hole, a longer carrier lifetime and higher gain would be obtained. In addition, based on the high carrier mobility of the graphene, the ultraviolet photodetector exhibited a persistent photoconduction effect and achieved a high responsivity of 200.69 A/W. The Kelvin probe force microscope measurements were carried out to reveal the device work mechanism and the carrier transport model has been established according to the decreased graphene surface potential of 0.2 eV before and after contacting with the GaN nanoparticles. Present work provides a method for obtaining new types of -nitrides-based ultraviolet photodetectors with high response. 2021 Elsevier B.V.
DOI	10.1016/j.jallcom.2021.159281
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收录类别	SCI ; EI
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/65304
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Y. Chen,Y. Wu,J. Ben,et al. A high-response ultraviolet photodetector by integrating GaN nanoparticles with graphene[J]. Journal of Alloys and Compounds,2021,868.
APA	Y. Chen.,Y. Wu.,J. Ben.,K. Jiang.,Y. Jia.,...&X. Sun and D. Li.(2021).A high-response ultraviolet photodetector by integrating GaN nanoparticles with graphene.Journal of Alloys and Compounds,868.
MLA	Y. Chen,et al."A high-response ultraviolet photodetector by integrating GaN nanoparticles with graphene".Journal of Alloys and Compounds 868(2021).

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