High gain amplifiers with amorphous silicon thin film transistors
This letter demonstrates amplifier design with amorphous hydrogenated silicon (a-Si:H) thin film transistors (TFTs) for high dc gain. High dc gain is achieved by the use of positive feedback to improve load impedance. The transfer characteristics of the amplifier are resistant to threshold voltage shift in the TFTs.
Sambandan, S. High gain amplifiers with amorphous silicon thin film transistors. IEEE Electron Device Letters. 2008 August; 29 (8): 882.