Characterization of Photo-CVD a-Si:H Films by Thin-Film Transistor Structure

Abstract
To investigate the dependence of transport properties of photo-CVD a-Si:H on deposition temperature, field effect mobility (µFE) and threshold voltage (V th) of thin film transistor (TFT) fabricated on a-Si:H prepared at different substrate temperatures were measured. Both µFE and V th and corresponding photoluminescence (PL) intensity show an optimum value at the deposition temperature of 200°C.