Sol-gel TiO/sub 2/(La) films as gate dielectric in MOS structures

Autor: Mariuca Gartner, C. Parlog, E. Kaedjiiska, A. Szekeres, S. Simeonov
Rok vydání: 2002
Předmět:
Zdroj: 1998 International Semiconductor Conference. CAS'98 Proceedings (Cat. No.98TH8351).
DOI: 10.1109/smicnd.1998.732350
Popis: 1 MHz C-V and G-V characteristics of undoped and doped with La TiO/sub 2/ films prepared by sol-gel technique were measured. It was found that low concentration of La in TiO/sub 2/ leads to an increase of the dielectric permittivity and a decrease of the oxide conductance. The average density of oxide defects increases with increasing the doping concentration. La/Ti atomic ratio of 0.22 results in a dramatic decrease of permittivity and in a strong generation of acceptor-like defects.
Databáze: OpenAIRE