中国物理B ›› 2006, Vol. 15 ›› Issue (11): 2731-2734.doi: 10.1088/1009-1963/15/11/045

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Properties of the incandescent light emitted fromdouble-walled carbon nanotube filament

韦进全1, 吴德海1, 骆建彬1, 王昆林1, 孙家林2, 郭继华2   

  1. (1)Key Laboratory for Advanced Manufacturing by Materials Processing Technology of Education Ministry and Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China; (2)Key Laboratory of Atomic and Molecular Nanosciences of Education Ministry and Department of Physics, Tsinghua University, Beijing 100084, China
  • 收稿日期:2005-10-11 修回日期:2006-07-10 出版日期:2006-11-20 发布日期:2006-11-20
  • 基金资助:
    Project supported by the Key Grant Program of Chinese Ministry of Education (Grant No 306020) and National Center for Nanoscience and Technology, China.

Properties of the incandescent light emitted fromdouble-walled carbon nanotube filament

Wei Jin-Quan(韦进全)a), Sun Jia-Lin(孙家林)b)†, Wu De-Hai(吴德海)a), Guo Ji-Hua(郭继华)b), Luo Jian-Bin(骆建彬)a), and Wang Kun-Lin(王昆林)a)   

  1. a Key Laboratory for Advanced Manufacturing by Materials Processing Technology of Education Ministry and Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China; b Key Laboratory of Atomic and Molecular Nanosciences of Education Ministry and Department of Physics, Tsinghua University, Beijing 100084, China
  • Received:2005-10-11 Revised:2006-07-10 Online:2006-11-20 Published:2006-11-20
  • Supported by:
    Project supported by the Key Grant Program of Chinese Ministry of Education (Grant No 306020) and National Center for Nanoscience and Technology, China.

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摘要： We have studied the radiation of a double-walled carbon nanotube (DWNT) filament with a length of 4.5\,mm and a diameter of 10\,$\mu$m by applying an electric current through the filament. The DWNT filament starts emitting incandescent light at voltage $U=6$\,V. Emission spectra of the DWNT below temperature 1250\,K can well be fitted to those of the blackbody radiation. The intensity of the incandescent light shows an exponential dependence on the voltage applied on the DWNT filaments. The resistance of the DWNT filaments is very stable at high temperatures between 900 and 1250\,K during the emission of light in the experiments.

关键词: double-walled carbon nanotube filament, emission spectra, exponential dependence

Abstract: We have studied the radiation of a double-walled carbon nanotube (DWNT) filament with a length of 4.5 mm and a diameter of 10 $\mu$m by applying an electric current through the filament. The DWNT filament starts emitting incandescent light at voltage $U=6$ V. Emission spectra of the DWNT below temperature 1250 K can well be fitted to those of the blackbody radiation. The intensity of the incandescent light shows an exponential dependence on the voltage applied on the DWNT filaments. The resistance of the DWNT filaments is very stable at high temperatures between 900 and 1250 K during the emission of light in the experiments.

Key words: double-walled carbon nanotube filament, emission spectra, exponential dependence

中图分类号:  (Nanotubes)

  • 78.67.Ch
61.46.Fg (Nanotubes) 73.63.Fg (Nanotubes) 78.55.-m (Photoluminescence, properties and materials)