Field emission properties of a potassium-doped multiwalled carbon nanotubetip

Citation
Bh. Hu et al., Field emission properties of a potassium-doped multiwalled carbon nanotubetip, JPN J A P 1, 40(8), 2001, pp. 5121-5122
Citations number
10
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Volume
40
Issue
8
Year of publication
2001
Pages
5121 - 5122
Database
ISI
SICI code
0021-4922(200108)40:8<5121:FEPOAP>2.0.ZU;2-8
Abstract
The field emission properties of a single closed multiwalled carbon nanotub e tip were investigated before and after doping with potassium. The thresho ld voltage was significantly reduced from 143 V to 76 V, but the emitter de graded in about 4 min. The current-voltage measurements fit the Fowler-Nord heim equation well up to about 100 nA of emission current. Additionally the work function of the multiwalled carbon nanotube tip could be estimated as being about 5.3 eV.