Dependence of channel thickness on the performance of In2O3 thin film transistors

被引：25

作者：

Dhananjay ^{[1
]}

Cheng, Shiau-Shin ^{[2
]}

Yang, Chuan-Yi ^{[2
]}

Ou, Chun-Wei ^{[2
]}

Chuang, You-Che ^{[2
]}

Wu, M. Chyi ^{[2
]}

Chu, Chih-Wei ^{[1
,3
]}

机构：

[1] Acad Sinica, Res Ctr Appl Sci, Taipei 11529, Taiwan

[2] Natl Tsing Hua Univ, Dept Elect Engn, Hsinchu, Taiwan

[3] Natl Chiao Tung Univ, Dept Photon, Hsinchu 30013, Taiwan

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2008年 / 41卷 / 09期

关键词：

D O I：

10.1088/0022-3727/41/9/092006

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Bottom gate and top contact thin film transistors were fabricated using In2O3 thin films as active channel layers. Thin films of varying thicknesses in the range 5 - 20 nm were deposited on an SiO2 gate dielectric by the thermal evaporation process in the presence of high purity oxygen. The results of atomic force microscopy show that all the films exhibit dense grain distribution with a root-mean-square roughness in the range 0.6-8.0 nm. Irrespective of the thickness of the channel layer, the on/off ratio of the device is 10(4). The channel mobility and resistivity were found to be a strong function of the thickness of the active layer. The Levinson model was used to calculate the trap density and the grain boundary mobility. The low processing temperature shows the possibility of utilizing these devices on flexible substrates such as polymer substrates.

引用

页数：6

共 19 条

[1] PMMA-Ta2O5 bilayer gate dielectric for low operating voltage organic FETs [J].