C-Axis oriented crystalline IGZO thin-film transistors by magnetron sputtering

被引:24
|
作者
Zhang, Junpeng [1 ]
Wen, Xizhang [1 ]
Hu, Luyao [1 ]
Xu, Wangying [1 ]
Zhu, Deliang [1 ]
Cao, Peijiang [1 ]
Liu, Wenjun [1 ]
Han, Shun [1 ]
Liu, Xinke [1 ]
Jia, Fang [1 ]
Zeng, Yuxiang [1 ]
Lu, Youming [1 ]
机构
[1] Shenzhen Univ, Guangdong Res Ctr Interfacial Engn Funct Mat, Coll Mat Sci & Engn, Shenzhen Key Lab Special Funct Mat, Shenzhen 518060, Peoples R China
基金
中国国家自然科学基金;
关键词
ROOM-TEMPERATURE; HIGH-PERFORMANCE; ZNO FILMS; ACTIVATION; PRESSURE; INGAZNO;
D O I
10.1039/c7tc00193b
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We demonstrate the direct formation of c-axis oriented crystalline IGZO thin films at room temperature by magnetron sputtering. The influence of processing parameters such as oxygen partial pressure, post-annealing temperature and channel thickness on the electrical performance of IGZO films and thin-film transistors (TFTs) was intensively investigated. The as-deposited crystalline IGZO TFTs exhibited a mobility of 4.49 cm(2) V-1 s(-1) and an on/off ratio of 2.08 x 10(7). For the annealed device, a high mobility of 10.51 cm(2) V-1 s(-1), a subthreshold swing of 0.672 V decade(-1), a threshold voltage of 0.38 V, as well as an on/off current ratio of similar to 10(8) are achieved with an annealing temperature of 400 degrees C. These results present a significant step towards the development of high-performance TFTs using oriented crystalline IGZO.
引用
收藏
页码:2388 / 2396
页数:9
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