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Hydrogenated microcrystalline silicon thin films (μc-Si:H) were deposited by plasma assistant magnetron sputtering in Ar-H2 gas mixture. The effects of growth temperature from 150 to 450 ℃ on properties of deposited Si films were investigated at two different hydrogen diluted gases with [H2]/([Ar]+[H2]) of 10%and 50%at 3 Pa. The crystallinity of Si films examined by Raman scattering exhibited higher degradation by lowering growth temperature from 250 to 150 ℃ in low hydrogen diluted gas of 10% than that in high hydrogen diluted gas of 50%. The IR absorption band around 845 and 890 cm-1 as well as calculated concentration of bonded hydrogen showed more obvious decrease of samples deposited in low hydrogen diluted gas of 10% than that in high hydrogen diluted gas of 50%. The optical band gasps of both groups of samples measured by ultraviolet-visible optical absorption were decreased with increasing temperature in both gas conditions.

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