Charge trapping type SOI-FinFET flash memory

Y. X. Liu, T. Nabatame, T. Matsukawa, K. Endo, S. O'uchi, J. Tsukada, H. Yamauchi, Y. Ishikawa, W. Mizubayashi, Y. Morita, S. Migita, H. Ota, T. Chikyow, M. Masahara

研究成果: Conference article査読

3 被引用数 (Scopus)


The charge trapping (CT) type tri-gate (TG) silicon on insulator (SOI) FinFET flash memories with different gate and blocking layer materials have successfully been fabricated, and their electrical characteristics including short-channel effect (SCE) immunity, threshold voltage (Vt) variability and memory property have comparatively been investigated. It was experimentally found that a large memory window is obtained in the physical vapor deposited (PVD) titanium nitride (TiN) metal gate flash memories than the n+-poly-Si gate ones owing to the higher work function of PVD-TiN metal gate, which is effective to suppress electron back tunneling during erase operation. It was also confirmed that the better SCE immunity and a significant improvement in memory window are observed by introducing a high-k Al2O3 blocking layer into the PVD-TiN metal gate flash memories. Moreover, it was found that the Vt variations before and after a program/erase (P/E) cycle are independent of the gate and blocking layer materials.

ジャーナルECS Transactions
出版ステータスPublished - 2014 1 1
イベント6th International Symposium on Dielectrics for Nanosystems: Materials Science, Processing, Reliability and Manufacturing - 225th ECS Meeting - Orlando, United States
継続期間: 2014 5 112014 5 15

ASJC Scopus subject areas

  • 工学(全般)


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