Circuit applications based on solution-processed zinc-tin oxide TFTs

Amorphous oxide semiconductors (AOS) have been extensively studied for circuit applications, such as inverters [1], oscillators [2], and memory devices [3]. Most of the AOS-based TFTs used in the circuits are processed with high-vacuum systems even though solution-based processes have the advantages of easy processing, low fabrication cost and potential for large coverage area. In this paper, we demonstrate circuits based on solution-processed zinc-tin oxide (ZTO) TFTs, including inverters, ring oscillators and amplifiers. Performance uniformity and circuit functionality have been achieved with solution-based processing technique.