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This letter describes that photogenerated hydrogen-radical annealing (HRA) is very effective for improving the electric properties of chemical-vapor-deposited amorphous silicon films. The ratio of photoconductivity to dark conductivity (at a light intensity of 100 mW/cm 2 ) changed from 100 to 6×10 4 upon annealing in a hydrogen-radical-rich ambient at 280°C. Thin-film transistor (TFT) characteristics were also improved by HRA.
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Uchida et al. (1990) studied this question.
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