期刊
APPLIED PHYSICS LETTERS
卷 93, 期 19, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3020714
关键词
amorphous semiconductors; annealing; gallium compounds; indium compounds; passivation; thin film transistors; zinc compounds
资金
- NEDO of Japan [06A12203d]
Roles of H2O addition to an annealing atmosphere were investigated for amorphous In-Ga-Zn-O thin-film transistors fabricated at room temperature. Although dry O-2 annealing improved saturation mobility (mu(sat)) and subthreshold voltage swings (S), wet O-2 annealing further improved them to mu(sat)similar to 12 cm(2)(V s)(-1) and S < 0.12 V decade(-1) along with improvement of their uniformity. Desorption of OH-related species caused conductivity increase during thermal annealing at < 310 degrees C. Zn-O components started to desorb at similar to 300 degrees C for the unannealed and the dry O-2 annealed films, while these were suppressed remarkably by the wet O-2 annealing.
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