首页 | 本学科首页   官方微博 | 高级检索  
     检索      


Temperature dependence of the raman spectra of carbon nanotubes with 1064 nm excitation
Authors:Y Ouyang  Y Fang  
Institution:Beijing Key Lab for Nano-Photonics and Nano-Structure, Capital Normal University, Beijing 100037, PR, China
Abstract:In this report, the near infrared 1064 nm line of an Nd:YAG laser, which has strong thermal effect, was used as the excitation. A temperature dependence of the Raman spectra of carbon nanotubes was observed at different temperatures by varying the incident laser power. The results show that the relative Raman intensities to the tangential stretching mode (G mode) of the higher-order Raman modes within 2500–3500 cm−1 increase with increasing excitation laser power at the sample and the changes in the relative Raman intensities are linear in the excitation laser power. This has not been reported elsewhere. Thorough analysis shows that this is a temperature dependence of double-phonon Raman scattering and maybe provide important information for the studying of CNTs and double-phonon Raman scattering.
Keywords:Single-walled carbon nanotubes  Multi-walled carbon nanotubes  Raman spectroscopy  Thermal effect
本文献已被 ScienceDirect 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号