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Investigation of the Flatband Voltage (V-FB) Shift of Al2O3 on N-2 Plasma Treated Si Substrate

Title
Investigation of the Flatband Voltage (V-FB) Shift of Al2O3 on N-2 Plasma Treated Si Substrate
Author
전형탁
Issue Date
2013-09
Publisher
American Scientific Publishers
Citation
Journal of Nanoscience and Nanotechnology, 2013, 13(9), P.6275-6279
Abstract
The relationships between the physical and electrical characteristics of films treated with N-2 plasma followed by forming gas annealing (FGA) were investigated. The Si substrates were treated with various radio frequency (RF) power levels under a N-2 ambient. Al2O3 films were then deposited on Si substrates via remote plasma atomic-layer deposition. The plasma characteristics, such as the radical and ion density, were investigated using optical emission spectroscopy. Through X-ray photoelectron spectroscopy, the chemical-bonding configurations of the samples treated with N-2 plasma and FGA were examined. The quantity of Si-N bonds increased as the RF power was increased, and Si-O-N bonds were generated after FGA. The flatband voltage (VFB) was shifted in the negative direction with increasing RF power, but the VFB values of the samples after FGA shifted in the positive direction due to the formation of Si-O-N bonds. N-2 plasma treatment with various RF power levels slightly increased the leakage current due to the generation of defect sites.
URI
http://www.ingentaconnect.com/content/asp/jnn/2013/00000013/00000009/art00063
DOI
10.1166/jnn.2013.7707
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > MATERIALS SCIENCE AND ENGINEERING(신소재공학부) > Articles
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