Physical origin of nonlinearity in the Fowler-Nordheim plot of field-induced emission from amorphous diamond films: Thermionic emission to field emission

Authors
Xu, NS Chen, J Deng, SZ
Citation
Ns. Xu et al., Physical origin of nonlinearity in the Fowler-Nordheim plot of field-induced emission from amorphous diamond films: Thermionic emission to field emission, APPL PHYS L, 76(17), 2000, pp. 2463-2465
Citations number
15
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
APPLIED PHYSICS LETTERS
ISSN journal
00036951 → ACNP
Volume
76
Issue
17
Year of publication
2000
Pages
2463 - 2465
Database
ISI
SICI code
0003-6951(20000424)76:17<2463:POONIT>2.0.ZU;2-F
Abstract
Nonlinearity is observed in Fowler-Nordheim (FN) plots of field emission fr om nondoped and nitrogen-doped amorphous diamond films. Based on a unified electron emission equation a detailed analysis is carried out. The results from numerical calculation of the unified equation are consistent with the experimental data. It is shown that the nonlinearity in the FN plot origina tes from a transition from thermionic emission to field emission as the app lied field increases. The electrical field ranges are derived in which the field emission and thermionic emission approximation applies. (C) 2000 Amer ican Institute of Physics. [S0003-6951(00)01017-2].