Raman spectroscopy of core/shell silicon nanowires grown on different substrates

被引：11

作者：

Khorasaninejad, M. ^{[1
]}

Adachi, M. M. ^{[1
]}

Walia, J. ^{[1
]}

Karim, K. S. ^{[1
]}

Saini, S. S. ^{[1
]}

机构：

[1] Univ Waterloo, Dept Elect & Comp Engn, Waterloo Inst Nanotechnol, Waterloo, ON N2L 3G1, Canada

来源：

PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE | 2013年 / 210卷 / 02期

关键词：

core/shell silicon nanowires; Raman spectroscopy; temperature effects; PHONON CONFINEMENT; SCATTERING; MICROCRYSTALLINE; SPECTRUM;

D O I：

10.1002/pssa.201228235

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Crystalline-amorphous core-shell silicon nanowires (SiNWs) grown separately on glass and stainless steel substrates were investigated by Raman spectroscopy. Raman spectra confirmed the presence of crystalline and amorphous silicon phases in both samples. With respect to bulk silicon, the crystalline Raman peaks for the nanowires grown on a glass substrate showed much larger red shift and spectral broadening as compared to that of the nanowires grown on stainless steel. The Raman shift was attributed to local heating which was further confirmed by the reduction in red shift of the Raman spectrum at lower incident powers for both samples. For a low input power of 0.8 mW, the nanowires grown on stainless steel showed no shift in the first order Raman peak as compared to bulk silicon, however a small spectral broadening was still observed. [GRAPHICS] . TEM images for the nanowires grown on steel substrate. (C) 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

引用

页码：373 / 377

页数：5

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