Journal
DIAMOND AND RELATED MATERIALS
Volume 14, Issue 3-7, Pages 584-588Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.diamond.2004.12.003
Keywords
MPCVD diamond; electrical properties; Schottky diodes; grain boundary; SCLC
Ask authors/readers for more resources
In the present work, we successfully related the macroscopic electrical transport to the microscopic inhomogeneities of the diamond film. A set of MPCVD diamond Schottky devices shows two distinct Schottky Barrier Heights (SBH), one near 1.1 V (dispersion approximate to 0.15 V) and other near 0.2 V (dispersion approximate to 0.02 V). Two activation energies were found: one near 150 meV (high temperature ionization region) and a very low activation energy near 2 meV (low temperature region, due to hopping effects). The study of the bulk conduction shows some evidence of space charge limited conduction influenced by shallow trap levels, as shown by the differential conductivity analysis. A discussion about a Poole-Frenkel model is included. The calculated macroscopic electrical current is obtained and the correlation with the physical structure is made. (c) 2005 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available