中国物理B ›› 2006, Vol. 15 ›› Issue (11): 2761-2764.doi: 10.1088/1009-1963/15/11/051

• • 上一篇    

Photoluminescence of multiwalled carbon nanotubes excited at different wavelengths

袁艳红1, 侯洵2, 白晋涛3, 苗润才4   

  1. (1)Department of Arts & Science, Shanghai Dianji University,Shanghai200240, China Institute of Photonics & Photon-Technology, and Provincial Key Laboratory of Photoelectronic Technology, Northwest University, Xi'an710069, China; (2)Institute of Photonics & Photon-Technology, and Provincial Key　Laboratory of Photoelectronic Technology, Northwest University, Xi'an 710069, China;State Key Laboratory of Transient Optics & Photonics,Xi'an Institute of Optics and Precision Mechanics, Chin; (3)Institute of Photonics & Photon-Technology, and Provincial Key Laboratory of Photoelectronic Technology, Northwest University, Xi'an710069, China; (4)Shaanxi Yulin College, Yulin719000, China
  • 收稿日期:2005-12-19 修回日期:2006-06-23 出版日期:2006-11-20 发布日期:2006-11-20

Photoluminescence of multiwalled carbon nanotubes excited at different wavelengths

Yuan Yan-Hong(袁艳红)a)b)†, Miao Run-Cai(苗润才)c), Bai Jin-Tao(白晋涛)b), and Hou Xun(侯洵)b)d)   

  1. a Department of Arts & Science, Shanghai Dianji University, Shanghai 200240, Chinab Institute of Photonics & Photon-Technology, and Provincial Key Laboratory of Photoelectronic Technology, Northwest University, Xi'an 710069, China; c Shaanxi Yulin College, Yulin 719000, China; d State Key Laboratory of Transient Optics & Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710068, China
  • Received:2005-12-19 Revised:2006-06-23 Online:2006-11-20 Published:2006-11-20

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摘要： In this paper the multiwalled carbon nanotubes (MWNTs) were synthesized by a chemical vapour deposition and the SEM graph shows that the sample has good construction. The micro-Raman spectrum shows the characteristic line of the MWNTs and an additional line produced by the defects on the outer surface of MWNTs. The photoluminescence (PL) spectra observed experimentally are variable under different excitation wavelengths and the strong excitation wavelength dependence of luminescence indicates a distribution of emitters which include electron $\pi$ in excited states and the Van Hove singularities. The absorption spectra confirm the transition channels which are consistent with the PL emission.

关键词: multiwalled carbon nanotubes, photoluminescence, excitation

Abstract: In this paper the multiwalled carbon nanotubes (MWNTs) were synthesized by a chemical vapour deposition and the SEM graph shows that the sample has good construction. The micro-Raman spectrum shows the characteristic line of the MWNTs and an additional line produced by the defects on the outer surface of MWNTs. The photoluminescence (PL) spectra observed experimentally are variable under different excitation wavelengths and the strong excitation wavelength dependence of luminescence indicates a distribution of emitters which include electron $\pi$ in excited states and the Van Hove singularities. The absorption spectra confirm the transition channels which are consistent with the PL emission.

Key words: multiwalled carbon nanotubes, photoluminescence, excitation

中图分类号:  (Nanotubes)

  • 78.67.Ch
78.30.-j (Infrared and Raman spectra) 78.55.-m (Photoluminescence, properties and materials) 81.07.De (Nanotubes) 81.16.Be (Chemical synthesis methods)