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논문 기본 정보

자료유형
학술대회자료
저자정보
Ha, Tae-Jun (School of Electrical Engineering and Computer Science, Seoul National University) Park, Hyun-Sang (School of Electrical Engineering and Computer Science, Seoul National University) Kim, Sun-Jae (School of Electrical Engineering and Computer Science, Seoul National University) Lee, Soo-Yeon (School of Electrical Engineering and Computer Science, Seoul National University) Han, Min-Koo (School of Electrical Engineering and Computer Science, Seoul National University)
저널정보
한국정보디스플레이학회 한국정보디스플레이학회 International Meeting 한국정보디스플레이학회 2009년도 9th International Meeting on Information Display
발행연도
2009.1
수록면
953 - 956 (4page)

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We have investigated the effect of light on amorphous silicon thin film transistors based photo-sensor applications. We have analyzed the instability caused by electrical gate bias stresses under the light illumination and the effect of photo-induced quasi-annealing on the instability. Threshold voltage ($V_{TH}$) under the negative gate bias stress with light illumination was more decreased than that under the negative gate bias stress without light illumination even though $V_{TH}$ caused by the light-induced stress without negative gate bias was shifted positively. These results are because the increase of carrier density in a channel region caused by the light illumination has the enhanced effect on the instability caused by negative gate bias stress. The prolonged light illumination led to the recovery of shifted VTH caused by negative gate bias stress under the light illumination due to the recombination of trapped hole charges.

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