Threshold Voltage Instability in Organic TFT with SiO2 and SiO2/Parylene-Stack Dielectrics

被引：1
|
作者：
Wrachien, Nicola [1 ]
Cester, Andrea [1 ]
Pinato, Alessandro [1 ]
Meneghini, Matteo [1 ]
Tazzoli, Augusto [1 ]
Meneghesso, Gaudenzio [1 ]
Kovac, Jaroslav [2 ]
Jakabovic, Jan [2 ]
Donoval, Daniel [2 ]
机构：
[1] Univ Padua, Dept Informat Engn, Padua, Italy
[2] Slovak Univ Technol Bratislava, Dept Microelect, Bratislava, Slovakia
来源：
2009 IEEE INTERNATIONAL RELIABILITY PHYSICS SYMPOSIUM, VOLS 1 AND 2 | 2009年
关键词：
hysteresis; organic TFT; parylene; pentacene; traps;
D O I：
10.1109/IRPS.2009.5173234
中图分类号：
TP301 [理论、方法];
学科分类号：
081202 ;
摘要：
We study the charge trapping/detrapping kinetics on pentacene-based organic thin-film-transistors featuring SiO2 and SiO2/parylene C stack gate insulators. The threshold voltage variation is correlated with the gate pulse width and amplitude, and it is due to charge trapping, rather than permanent degradation. The detrapping kinetics is thermally-activated and it is accelerated if the device is illuminated. The additional parylene layer brings benefits by strongly reducing the charge trapping/detrapping, and increasing the hole mobility and the drain current.
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页码：109 / +
页数：3
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