Polarization assisted self-powered GaN-based UV photodetector with high responsivity

doi:10.1364/PRJ.418813

CIOMP OpenIR

	Polarization assisted self-powered GaN-based UV photodetector with high responsivity
	J. Wang; C. Chu; K. Tian; J. Che; H. Shao; Y. Zhang; K. Jiang; Z.-H. Zhang; X. Sun and D. Li
	2021
发表期刊	Photonics Research
ISSN	23279125
卷号	9 期号:5 页码:734-740
摘要	In this work, a self-powered GaN-based metal-semiconductor-metal photodetector (MSM PD) with high responsivity has been proposed and fabricated. The proposed MSM PD forms an asymmetric feature by using the polarization effect under one electrode, such that we adopt an AlGaN/GaN heterojunction to produce the electric field, and by doing so, an asymmetric energy band between the two electrodes can be obtained even when the device is unbiased. The asymmetric feature is proven by generating the asymmetric current-voltage characteristics both in the dark and the illumination conditions. Our results show that the asymmetric energy band enables the self-powered PD, and the peak responsivity wavelength is 240 nm with the responsivity of 0.005 A/W. Moreover, a high responsivity of 13.56 A/W at the applied bias of 3 V is also achieved. Thanks to the very strong electric field in the charge transport region, when compared to the symmetric MSM PD, the proposed MSM PD can reach an increased photocurrent of 100 times larger than that for the conventional PD, even if the illumination intensity for the light source becomes increased. 2021 Chinese Laser Press.
DOI	10.1364/PRJ.418813
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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/181722/65539
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	J. Wang,C. Chu,K. Tian,et al. Polarization assisted self-powered GaN-based UV photodetector with high responsivity[J]. Photonics Research,2021,9(5):734-740.
APA	J. Wang.,C. Chu.,K. Tian.,J. Che.,H. Shao.,...&X. Sun and D. Li.(2021).Polarization assisted self-powered GaN-based UV photodetector with high responsivity.Photonics Research,9(5),734-740.
MLA	J. Wang,et al."Polarization assisted self-powered GaN-based UV photodetector with high responsivity".Photonics Research 9.5(2021):734-740.

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