Properties of the incandescent light emitted fromdouble-walled carbon nanotube filament |
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| Authors: | Wei Jin-Quan Sun Jia-Lin Wu De-Hai Guo Ji-Hu Luo Jian-Bin and Wang Kun-Lin |
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| Institution: | Key Laboratory for Advanced Manufacturing by Materials Processing Technology of Education Ministry and Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China; Key Laboratory of Atomic and Molecular Nanosciences of Education Ministry and Department of Physics, Tsinghua University, Beijing 100084, China |
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| 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. |
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| Keywords: | double-walled carbon nanotube
filament emission spectra exponential dependence |
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