Chemically sensitive hydrogenated amorphous silicon thin-film transistors

In this work the application of a-Si:H thinfilmtransistor (TFT) technology in the field of chemical sensors is presented. In particular, two different types of devices have been fabricated: a) Pd-gate hydrogen sensors; b) K+-ion sensitive FET (ISFET). The obtained results show that a-Si:H TFT can be successfully used as gassensitive and ion-sensitive sensors and can represent a promising technology in this area.