期刊
APPLIED PHYSICS LETTERS
卷 92, 期 1, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.2831667
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资金
- Korea Institute of Industrial Technology(KITECH) [10029943] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [과06A1107] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Cobalt-silicide (CoSi2) nanocrystals (NCs) were investigated for use in charge storage for metal oxide semiconductor (MOS) devices with thin HfO2 tunneling and control oxide layers. CoSi2 NCs were synthesized by exposure of Co/Si/HfO2 tunneling oxide/Si stacks to an external UV laser. Observations from transmission electron microscopy and x-ray photoelectron spectroscopy clearly confirm the formation of CoSi2 NCs and the values of Co-Si bonding energies that are shifted 0.3 eV from original values, respectively. The CoSi2 NCs in MOS devices exhibited a large memory window of 3.4 V as well as efficient programming/erasing speeds, good retention, and endurance times. (c) 2008 American Institute of Physics.
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