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In this study, enhancements of the carrier transport properties of p-type < 100 >-oriented Si whiskers are observed under uniaxial tensile and compressive strains. It has been found that over 400% enhancement of electrical conductivity is achieved under a 2% tensile strain, while a 2% compressive strain can only cause similar to 80% conductivity enhancement. The enhancements are mainly attributed to the breaking of the degeneracy of the v2 and v1 valence bands induced a reduction of the hole effective mass. This study provides an important insight of how the carrier mobility variation caused by the strain impact on their transport properties. (C) 2014 AIP Publishing LLC.
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来源 :
APPLIED PHYSICS LETTERS
ISSN: 0003-6951
年份: 2014
期: 1
卷: 104
4 . 0 0 0
JCR@2022
ESI学科: PHYSICS;
ESI高被引阀值:202
JCR分区:1
中科院分区:2
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