Analogue circuit building blocks with amorphous silicon thin film transistors

Analogue circuit building blocks with amorphous silicon thin film transistors

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Useful building blocks such as the analogue subtractor, adder, and current source, with amorphous silicon (a-Si:H) thin film transistors (TFTs) are presented. The circuits built with only n-channel devices tackle the problem of threshold voltage instability in the TFT to provide stable transfer characteristics.


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      • P. Servati , A. Nathan . Modeling of static and dynamic behaviour of amorphous silicon thin-film transistors. J. Vac. Sci. Technol. A, Vac. Surf. Films , 4 , 1374 - 1378
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      • F.R. Libsch , J. Kanicki . Bias-stress-induced stretched-exponential time dependence of charge injection and trapping in amorphous silicon thin film transistors. Appl. Phys. Lett. , 1286 - 1288

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