期刊
APPLIED PHYSICS LETTERS
卷 106, 期 5, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4906999
关键词
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资金
- National Natural Science Foundation of China [51372002]
- Key Laboratory of Advanced Display and System Applications, Ministry of Education (Shanghai University) [P2014]
A combustion solution method was developed to fabricate amorphous ZnAlSnO (a-ZATO) for thin-film transistors (TFTs). The properties of a-ZATO films and behaviors of a-ZATO TFTs were studied in detail. An appropriate Al content in the matrix could suppress the formation of oxygen vacancies efficiently and achieve densely amorphous films. The a-ZATO TFTs exhibited acceptable performances, with an on/off current ratio of similar to 10(6), field-effect mobility of 2.33 cm(2).V-1.S-1, threshold voltage of 2.39 V, and subthreshold swing of 0.52 V/decade at an optimal Al content (0.5). The relation between on-and off-resistance of the ZATO TFT was also within the range expected for fast switching devices. More importantly, the introduced Al with an appropriate content had the ability to evidently enhance the device long-term stability under working bias stress and storage durations. The obtained indium-and gallium-free a-ZATO TFTs are very promising for the next-generation displays. (C) 2015 AIP Publishing LLC.
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