Abstract
Carbon nanotube (CNT) bulbs made of decimeter-scale double-walled carbon nanotube (DWCNT) strands and films were fabricated and their luminescence properties, including the lighting efficiency, voltage-current relation and thermal stability were investigated. The results show that the DWCNT bulb has a comparable spectrum of visible light with tungsten bulb and its average efficiency is 40% higher than that of a tungsten filament at the same temperature (1400–2300 K). The nanotube filaments show both resistance and thermal stability over a large temperature region. No obvious damage was found for a nanotube bulb illuminating at 2300 K for more than 24 hours in vacuum.
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Supported by the National Center for Nanoscience and Technology, China
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Li, C., Wang, K., Wei, J. et al. Luminescence of carbon nanotube bulbs. CHINESE SCI BULL 52, 113–117 (2007). https://doi.org/10.1007/s11434-007-2211-8
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DOI: https://doi.org/10.1007/s11434-007-2211-8