Abstract
This study reports on the fabrication and characterization of thin-film transistors (TFTs) based on indium–gallium–zinc–oxide (IGZO) with various source- and drain-region metals (Pt, W and Ti). The performance of the IGZO transistors is compared to TFTs based on hydrogenated amorphous silicon (a-Si:H) with Pt source- and drain-regions. From the output characteristics maximum saturation mobilities of µ = 0.45 cm2/Vs for a-Si:H, and µ = 24 to 50 cm2/Vs for IGZO TFTs are extracted, which are competitive to high-performance thin-film transistors. The study reveals a general influence of the source- and drain-electrode material on the maximum saturation mobility and inverse sub-threshold slope.Graphical abstract
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