Ni doping of semiconducting boron carbide

Authors

Nina Hong, University of Nebraska - LincolnFollow
Marjorie Langell, University of Nebraska - LincolnFollow
Jing Liu, University of Nebraska - Lincoln
Orhan Kizilkaya, Louisiana State University at Baton RougeFollow
Shireen Adenwalla, University of Nebraska - LincolnFollow

Date of this Version

2010

Comments

Published in J. Appl. Phys. 107, 024513 (2010). Copyright © 2010 American Institute of Physics. Used by permission.

Abstract

The wide band gap, temperature stability, high resistivity, and robustness of semiconducting boron carbide make it an attractive material for device applications. Undoped boron carbide is p type; Ni acts as a n-type dopant. Here we present the results of controlled doping of boron carbide with Ni on thin film samples grown using plasma enhanced chemical vapor deposition. The change in the dopant concentration within the thin film as a function of the dopant flow rate in the precursor gas mixture was confirmed by x-ray photoelectron spectroscopy measurements; with increasing dopant concentration, current-voltage (I-V) curves clearly establish the trend from p-type to n-type boron carbide.