标题: | Performance of sol-gel deposited Zn1-xMgxO films used as active channel layer for thin-film transistors |
作者: | Tsay, Chien-Yie Cheng, Hua-Chi Wang, Min-Chi Lee, Pee-Yew Chen, Chia-Fu Lin, Chung-Kwei 材料科学与工程学系 Department of Materials Science and Engineering |
关键字: | Zn1-xMgxO films;sol-gel method;thin-film transistors |
公开日期: | 15-十二月-2007 |
摘要: | ZnO thin-film transistors (TFTs) have attracted considerable R&D interest due to their high transparency and low photosensitivity compared with typical a-Si:H TFTs. The electrical characteristics of ZnO thin films may be controlled by doping with ternary element, for instance Al, Ga, In, Mg, Zr, etc. In this study, Zn1-x ,MgxO (x= 0 to 0.36) thin films were deposited on glass substrates by spin coating. The as-deposited films were baked at 300 degrees C for 10 min and then annealed at 500 degrees C for I h in air. The results show that, addition of Mg-species in ZnO films markedly enhanced the uniformity of film thickness and improved optical properties. The Zn0.8Mg0.2O film exhibited the best transparency of 92%, an increase of similar to 15% over a pure ZnO film, and the rms roughness value decreased to 1.63. The Zn1-x .,MgxO TFTs were demonstrated to have n-type enhancement behavior. The optimum device with Zn0.8Mg0.2O channel layer had a field-effect mobility of 0.1 cm(2) /V s, a threshold voltage of 6.0 V, and an on/off ratio more than 10(7). (c) 2007 Elsevier B.V. All rights reserved. |
URI: | http://dx.doi.org/10.1016/j.surfcoat.2007.07.080 http://hdl.handle.net/11536/3686 |
ISSN: | 0257-8972 |
DOI: | 10.1016/j.surfcoat.2007.07.080 |
期刊: | SURFACE & COATINGS TECHNOLOGY |
Volume: | 202 |
Issue: | 4-7 |
起始页: | 1323 |
结束页: | 1328 |
显示于类别: | Conferences Paper |
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