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	Photoelectronic studies on an asymmetric step quantum-well middle wavelength infrared detector
	Wu, WG
	2001
关键词	InGaAs asymmetric step quantum-well intersubband transitions Stark effects photovoltaic infrared detector APPLIED ELECTRIC-FIELD INTERSUBBAND TRANSITIONS MULTIQUANTUM WELLS
英文摘要	Photoelectronic characteristics of the fabricated InxGa1-xAs/AlyGa1-yAs/AlzGa1-zAs asymmetric step quantum-well middle wavelength (3tilde5 mum) infrared detectors are studied. The components display photovoltaic-type photocurrent response as well as the bias-controlled modulation of the peak wavelength of the main response, which is ascribed to the Stark shifts of the intersubband transitions from the local ground states to the extended first excited states in the quantum wells, at the 3tilde5.3 mum infrared atmospheric transmission window. The blackbody detectivity (D-bb(.)) of the detectors reaches to about 1.0x10(10) cm.Hz(1/2)/W at 77 K under bias of +/-7 V. By expanding the electron wave function in terms of normalized plane wave basis within the framework of the effective-mass envelope-function theory, the linear Stark effects of the intersubband transitions between the ground and first excited states in the asymmetric step well are calculated. The obtained results agree well with the corresponding experimental measurements.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000174067400026&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Engineering, Manufacturing; Engineering, Electrical & Electronic; Optics; EI; CPCI-S(ISTP); 0
语种	英语
DOI标识	10.1117/12.445754
内容类型	其他
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/293945]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Wu, WG. Photoelectronic studies on an asymmetric step quantum-well middle wavelength infrared detector. 2001-01-01.

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