Energy spectrum of surface states of lattice-matched In0.52Al0.48As surface intrinsic-n(+) structure

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Title:	Energy spectrum of surface states of lattice-matched In0.52Al0.48As surface intrinsic-n(+) structure
Authors:	Hwang,JS;Hwang,WC;Yang,ZP;Chang,GS;Chyi,JI;Yeh,NT
Contributors:	電機工程研究所
Keywords:	MODULATION SPECTROSCOPY;FERMI-LEVEL
Date:	1999
Issue Date:	2010-06-29 20:20:31 (UTC+8)
Publisher:	中央大學
Abstract:	This work uses photoreflectance to investigate the band gap, built-in electric field, and surface Fermi level of a series of lattice-matched In0.52Al0.48As surface intrinsic-n(+) structures having different undoped layer thickness. Experimental results indicate that the surface Fermi level is weakly pinned. By converting the dependence of the built-in electric field on undoped layer thickness into the dependence of surface state density on the surface Fermi level, this study defines the energy spectrum of the surface state density of InAlAs surface using a Gaussian distribution function. (C) 1999 American Institute of Physics. [S0003-6951(99)05540-0].
Relation:	APPLIED PHYSICS LETTERS
Appears in Collections:	[Graduate Institute of Electrical Engineering] journal & Dissertation

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