TY - JOUR
T1 - Floating gate memory based on ferritin nanodots with high-k gate dielectrics
AU - Ohara, Kosuke
AU - Uraoka, Yukiharu
AU - Fuyuki, Takashi
AU - Yamashita, Ichiro
AU - Yaegashi, Toshitake
AU - Moniwa, Masahiro
AU - Yoshimaru, Masaki
PY - 2009/4/1
Y1 - 2009/4/1
N2 - The memory characteristics of nanodot-type floating gate memory with high-k tunnel oxide were investigated by measuring the memory characteristics of metal-oxide-semiconductor (MOS) capacitors with biomineralized inorganic nanodots. Biomineralized iron bio nanodots (Fe-BNDs) accommodated in ferritin were utilized as a storage charge. High-density and monolayer Fe-BNDs were absorbed by high-k tunnel oxide. Fabricated MOS capacitors showed clear hysteresis in capacitance-voltage (C-V) characteristics. The observed hysteresis in C-V characteristics was occurred by charging and discharging to Fe-BNDs. A large memory window and good retention characteristic were obtained using high-k as tunnel oxide. This is caused by the difference in the charging mechanism to Fe-BND. This research confirmed that the combination of bio nanodot floating gate memory with high-k film is promising for next-generation memory devices.
AB - The memory characteristics of nanodot-type floating gate memory with high-k tunnel oxide were investigated by measuring the memory characteristics of metal-oxide-semiconductor (MOS) capacitors with biomineralized inorganic nanodots. Biomineralized iron bio nanodots (Fe-BNDs) accommodated in ferritin were utilized as a storage charge. High-density and monolayer Fe-BNDs were absorbed by high-k tunnel oxide. Fabricated MOS capacitors showed clear hysteresis in capacitance-voltage (C-V) characteristics. The observed hysteresis in C-V characteristics was occurred by charging and discharging to Fe-BNDs. A large memory window and good retention characteristic were obtained using high-k as tunnel oxide. This is caused by the difference in the charging mechanism to Fe-BND. This research confirmed that the combination of bio nanodot floating gate memory with high-k film is promising for next-generation memory devices.
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U2 - 10.1143/JJAP.48.04C153
DO - 10.1143/JJAP.48.04C153
M3 - Article
AN - SCOPUS:77952523667
VL - 48
JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
SN - 0021-4922
IS - 4 PART 2
M1 - 04C153
ER -