Boron and aluminum diffusion into 4H-SiC substrates |
| |
Authors: | Andrzej Kubiak Jacek Rogowski |
| |
Affiliation: | a Technical University of Lodz, Department of Semiconductor and Optoelectronic Devices, Wolczanska 211/215, 90-924 Lodz, Poland b Technical University of Lodz, Zeromskiego 116, 90-924 Lodz, Poland |
| |
Abstract: | Boron and aluminum doping by diffusion into n-type 4H-SiC Si-face substrates was carried out at the temperatures of 1800-2000 °C. Secondary ion mass spectroscopy (SIMS) was employed to obtain the impurity profiles, which showed that linearly graded boron profile and shallow aluminum profiles have been achieved, which may be a promising application in SiC device fabrication, such as p-n diode or ohmic contact. Characterization of high temperature processing influence on SiC surface morphology has been performed. Elemental boron and aluminum carbide were determined to be the best candidates as an impurity source materials for realizing p-type diffusion. |
| |
Keywords: | Silicon carbide Thermal diffusion p-n diode |
本文献已被 ScienceDirect 等数据库收录! |
|