We report performance characteristics of nanocrystalline silicon thin-film transistors (TFTs) fabricated at 280 degC by plasma-enhanced chemical vapor deposition. The TFTs exhibit field-effect mobility of 0.8 cm2V-1s-1, threshold voltage of 4 V, on/off current ratio about 108 with an off-current of 10-13 A, and subthreshold slope of 0.8 V/dec. Bias stress measurements show that the TFT is 3-5 times more stable than the hydrogenated amorphous silicon (a-Si:H) counterpart, with a shift in threshold voltage that is less than 5 % at a gate voltage of 15 V
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Electron Devices Meeting, 2006. IEDM '06. International
Date of Conference: 11-13 Dec. 2006