Electrical Characteristics of Metal/High-k MOS Devices Using Effective Oxygen Control for Sub-1nm EOT

Autor: Parhat Ahmet, Takeo Hattori, A.N. Chandorkar, Hiroshi Iwai, Kuniyuki Kakushima, Koichi Okamoto, Kazuo Tsutsui, Nobuyuki Sugii
Rok vydání: 2008
Předmět:
Zdroj: ECS Transactions. 16:203-212
ISSN: 1938-6737
1938-5862
DOI: 10.1149/1.2981603
Popis: In this study, we have studied the mechanism of equivalent oxide thickness (EOT) increase after annealing using oxygen diffusion model from W gate electrode. It has been revealed that proper thickness W insertion into metal/high-k interface could depress EOT increase after post metallization annealing (PMA) and achieve small CV hysteresis.
Databáze: OpenAIRE