Title
Electrical characteristics of MOSFETs with La2O3/Y2O3 gate stack
Abstract
A metal oxide semiconductor field effect transistor (MOSFET) with ultra-thin La2O3/Y2O3 high-k gate dielectric was fabricated. The effects of thermal treatment process on both physical and electrical characteristics of the La2O3/Y2O3 stack were studied using XPS and electrical measurements. It was observed that the effective mobility of the fabricated MOSFETs with La2O3/Y2O3 gate stack was not degraded with increasing the annealing temperatures up to 600°C. X-ray photoelectron spectroscopy (XPS) analysis also revealed that the formation of SiO2 and silicate layer at the interface was suppressed in La2O3/Y2O3 stack compare to that of in La2O3 single layer. Obtained results suggesting that La2O3/Y2O3 gate stack is one of the promising candidates for high-k gate insulator to be used in the future metal oxide field effect transistors.
Year
DOI
Venue
2008
10.1016/j.microrel.2008.09.004
Microelectronics Reliability
DocType
Volume
Issue
Journal
48
11
ISSN
Citations 
PageRank 
0026-2714
0
0.34
References 
Authors
0
8
Name
Order
Citations
PageRank
Parhat Ahmet134.13
Kentaro Nakagawa200.34
Kuniyuki Kakushima3911.63
Hiroshi Nohira400.34
Kazuo Tsutsui569.26
Nobuyuki Sugii645.26
Takeo Hattori711.98
Hiroshi Iwai81212.99