Strong effects of substitute nitrogen-doping on linear optical absorption spectra of zigzag carbon nanotubes

✍ Scribed by Sheng Bao; Jianping Zheng; Guohua Yang; Jiangwei Chen

• Publisher: Elsevier Science
• Year: 2009
• Tongue: English
• Weight: 343 KB
• Volume: 404
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/j.physb.2009.07.167

✦ Synopsis

We theoretically study effects of substitute nitrogen-doping on linear optical properties of zigzag carbon nanotubes using tight-binding model and gradient approximation. It is found that, generally, nitrogendoping reduces the value of absorption peaks and creates a number of new absorption peaks. In addition, near the low energy range, linear optical absorption spectra of nitrogen-doped (m,0) zigzag tubes are remarkably dependent on whether m mod 3 (the remainder of dividing m by 3) is equal to 0, 1 or 2.