Browsing by Author "Chen, Ya-Wei"

Now showing 1 - 2 of 2

The Current Behaviors of the Amorphous In-Ga-Zn-O Thin-Film Transistor Under Varying Illumination Conditions
(2016-04)
Tai, Ya-Hsiang
;
Chang, Chun-Yi
;
Chen, Ya-Wei
;
光電工程學系
;
顯示科技研究所
In this study, the time response behavior of the amorphous indium-gallium zinc-oxide (a-IGZO) thin-film transistors (TFTs) to the illumination pulse is analyzed. We modified the previously proposed fitting formula by changing the fitting parameters from constant to time dependent. The mechanism for the response behaviors is proposed based on the analysis of the fitting parameters with respect to measurement time and under different light intensities. The single-pulse measurement results and their corresponding fitting parameters is used as the database to predict the current behaviors of the TFTs under multi-pulse illumination. The predicted and measured results fit fairly well. The method to formulize the time response for the a-IGZO TFT under varying situations of illumination is thus developed, which can be important in the design and simulation of transparent electronic circuits.
The Time Response of the On-Current for the Amorphous In-Ga-Zn-O Thin Film Transistor to the Illumination Pulse
(2014)
Tai, Ya-Hsiang
;
Chang, Chun-Yi
;
Chen, Ya-Wei
;
Chen, Yi-Jung
;
交大名義發表
In this study, the time response behavior of the amorphous indium gallium zinc oxide (a-IGZO) thin film transistors (TFTs) to the illumination pulse is analyzed. The mechanism is proposed to correlate the oxygen vacancy reacting with the light-induced electron-hole pairs. The temperature effect on the time response to the illumination pulse is also studied. The higher excitation level, either from light or temperature, results in the similar excited and recovering behaviors. The formulas for the time response are proposed to be possibly used in the simulation for the circuit performance in real situation of illumination, which is important in the development of transparent electronics using a-IGZO TFT. (c) The Author(s) 2014. Published by ECS. All rights reserved.