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	Neutron irradiation effect in two-dimensional electron gas of algan/gan heterostructures
	Zhang Ming-Lan; Wang Xiao-Liang; Xiao Hong-Ling; Wang Cui-Mei; Ran Jun-Xue; Hu Guo-Xin
刊名	Chinese physics letters
	2008-03-01
卷号	25期号:3页码:1045-1048
ISSN号	0256-307X
通讯作者	Zhang ming-lan(mlzhang@semi.ac.cn)
英文摘要	Algan/gan heterostructures have been irradiated by neutrons with different influences and characterized by means of temperature-dependent hall measurements and micro-raman scattering techniques. it is found that the carrier mobility of two-dimensional electron gas (2deg) is very sensitive to neutrons. at a low influence of 6.13 x 10(15) cm(-2), the carrier mobility drops sharply, while the sheet carrier density remains the same as that of an unirradiated sample. moreover, even for a fluence of up to 3.66 x 10(16) cm(-2), the sheet carrier density shows only a slight drop. we attribute the degradation of the figure-of-merit (product of n(s) x mu) of 2deg to the defects induced by neutron irradiation. raman measurements show that neutron irradiation does not yield obvious change to the strain state of algan/gan heterostructures, which proves that degradation of sheet carrier density has no relation to strain relaxation in the present study. the increase of the product of n(s) x mu of 2deg during rapid thermal annealing processes at relatively high temperature has been attributed to the activation of ge-ga transmuted from ga and the recovery of displaced defects.
WOS关键词	TRANSPORT ; PROTON ; HEMTS
WOS研究方向	Physics
WOS类目	Physics, Multidisciplinary
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000254124700065
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2427204
专题	半导体研究所
通讯作者	Zhang Ming-Lan
作者单位	Chinese Acad Sci, Inst Semicond, Beijing 100083, Peoples R China
推荐引用方式 GB/T 7714	Zhang Ming-Lan,Wang Xiao-Liang,Xiao Hong-Ling,et al. Neutron irradiation effect in two-dimensional electron gas of algan/gan heterostructures[J]. Chinese physics letters,2008,25(3):1045-1048.
APA	Zhang Ming-Lan,Wang Xiao-Liang,Xiao Hong-Ling,Wang Cui-Mei,Ran Jun-Xue,&Hu Guo-Xin.(2008).Neutron irradiation effect in two-dimensional electron gas of algan/gan heterostructures.Chinese physics letters,25(3),1045-1048.
MLA	Zhang Ming-Lan,et al."Neutron irradiation effect in two-dimensional electron gas of algan/gan heterostructures".Chinese physics letters 25.3(2008):1045-1048.

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