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First-principles study on field emission properties of carbon nanocone

Zhang Jiao-Qiang Wang Liu-Ding Chen Guo-Dong Yang Min Wang Yi-Jun An Bo

First-principles study on field emission properties of carbon nanocone

Zhang Jiao-Qiang, Wang Liu-Ding, Chen Guo-Dong, Yang Min, Wang Yi-Jun, An Bo
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  • Abstract views:  3507
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  • Received Date:  22 March 2009
  • Accepted Date:  01 April 2009
  • Published Online:  20 November 2009

First-principles study on field emission properties of carbon nanocone

  • 1. (1)西北工业大学应用化学系,西安 710129; (2)西北工业大学应用物理系,西安 710129

Abstract: The first-principles calculation was performed to study the electron field emission properties of carbon nanocones (CNC) with different cone angles and geometrical structures. The results show that with the increase of the applied electric field (Eadd), the electronic structure of CNC changes significantly, the density of states (DOS) shifts towards to low energy position. Especially, DOS at Ef increases and the pseudogap decreases respectively, and a majority of electrons congregate at the close end. The investigation of DOS, HOMO/LUMO and Mulliken population analysis indicates that CNC3 and CNC4 are very suited for electron field emission.

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