Properties of the incandescent light emitted from double-walled carbon nanotube filament

• 来源期刊: 中国物理（英文版）
• 关键词: double-walled carbon nanotube filament emission spectra exponential dependence
• 年，卷（期）: 2006,（11）
• 页码范围: 2731-2734
• 页数: 4页
• 语种: 英文

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 10μm 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.