The Effect of Incident Laser Power on Raman Spectra and Photoluminescence Spectra of Silicon Nanowires
ZHANG Qiu-hui1, GUO Zhuang-zhi1, FENG Guo-ying2
1. College of Electrical and Information Engineering, Henan University of Engineering, Zhengzhou 451191, China
2. College of Electronics and Information Engineering, Sichuan University, Chengdu 610064, China
Abstract：Silicon nanowires is one of key photoelectric materials. In this paper, silicon nanowires have been fabricated by chemical vapor deposition, the Raman spectra and photoluminescence spectra excited by 532 nm laser have been studied, first-order Raman peaks were found to red shift and broaden with the increase of incident power, photoluminescence blueshifted to shorter wavelength and another peak appeared. The experiment results were analyzed by phonon confinement effect, lattice stress, and nonuniform heating effect of laser, the relation between laser power and Raman shift simulated by Matlab, it was found that the nonuniform heating effect of laser is the main reason for Raman spectra and photoluminescence spectra change with incident power.
张秋慧，郭壮志，冯国英. 入射激光功率对硅纳米线拉曼光谱及荧光光谱的影响[J]. 光谱学与光谱分析, 2018, 38(04): 1118-1121.
ZHANG Qiu-hui, GUO Zhuang-zhi, FENG Guo-ying. The Effect of Incident Laser Power on Raman Spectra and Photoluminescence Spectra of Silicon Nanowires. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2018, 38(04): 1118-1121.
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