High-performance bilayer metal-oxide thin film transistors using ultra-thin solution-processed ZrOx dielectric

Autor:	Shan, F. K., Liu, A., Liu, G. X., Meng, Y., Shin, B. C., Fortunato, E., Martins, R.
Rok vydání:	2014
Předmět:	Condensed Matter - Materials Science
Druh dokumentu:	Working Paper
Popis:	We reported here a high-performance In2O3/InZnO bilayer metal-oxide (BMO) thin-film transistor (TFT) using ultra-thin solution-processed ZrOx dielectric. A thin layer of In2O3 offers a higher carrier concentration, thereby maximizing the charge accumulation and yielding high carrier mobility. A thick layer of InZnO controls the charge conductance resulting in low off-state current and suitable threshold voltage. As a consequence, the BMO TFT showed higher filed-effect mobility (37.9 cm2/V s) than single-layer InZnO TFT (7.6 cm2/V s). More importantly, an on/off current ratio of 109, a subthreshold swing voltage of 120 mV/decade, as well as a threshold voltage shift (less than 0.4 V) under bias stress for 2.5 hours were obtained simultaneously. These promising properties are obtained at a low operation voltage of 3 V. This work demonstrates that the BMO TFT has great potential applications as switching transistor and low-power devices. Comment: This paper has been withdraw by the author due to some critical errors in one figure
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1405.4373 Zobrazit plný text záznamu View this record from Arxiv