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题名: Study on the Raman spectra of GaP nanorods synthesized within carbon nanotube templates
作者: Ma BS;  Fang ZL;  Su FH;  Ding K;  Han HX;  Li GH
发表日期: 2003
摘要: The Raman spectra of GaP nanorods grown in carbon nanotube templates have been reported. The red shifts of the TO and LO modes were observed due to phonon confinement effect in GaP nanorods. The measured red shifts range from 2 to 10cm(-1) depending on the size of the measured nanorods. It has been found that the polarization properties, which cannot be well explained by the selection rules of single nanorod, result from the direction disorder of nanorods in the measured area. The more the disorder is, the weaker the directionality of polarization properties is. The decrease of the Raman frequency of the TO and LO mode of the nanorods with the increasing power of the exciting laser suggests that the heating effect of the nanorods is far stronger than the bulk material. In addition, the saturation and then decrease of the Raman intensity with the increasing laser power indicate the rapid increase of the defects in the nanorods exposed to a strong exciting laser.
KOS主题词: gap;  Nanostructured materials;  Raman effect;  Raman spectroscopy;  Gallium
刊名: JOURNAL OF INFRARED AND MILLIMETER WAVES
专题: 中国科学院半导体研究所(2009年前)_期刊论文

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Ma BS; Fang ZL; Su FH; Ding K; Han HX; Li GH .Study on the Raman spectra of GaP nanorods synthesized within carbon nanotube templates ,JOURNAL OF INFRARED AND MILLIMETER WAVES,2003 ,22 (1):1-7
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