Low Thermal Budget Amorphous Indium Tungsten Oxide Nano-Sheet Junctionless Transistors with Near Ideal Subthreshold Swing

Abstract

Amorphous indium tungsten oxide (a-IWO) nano-sheet (NS) junctionless (JL) transistors (a-IWO NS-JLTs) have been successfully fabricated and demonstrated in the category of indium oxide based thin film transistors (TFTs). We have scaled down thickness of a-IWO channel to 4nm. The proposed a-IWO NS-JLTs with low operation voltages exhibit good electrical characteristics: near ideal peak subthreshold swing (S.S.) ~ 63mV/dec., high field-effect mobility (μFE) ~ 25.3 cm2/V-s. The novel a-IWO NS-JLTs with low temperature processes are promising candidates for monolithic three-dimensional integrated circuits (3-D ICs), vertical stacked (VS) hybrid CMOS technology, and large-scale integration (LSI) applications in the future.