Browsing by Author "Hunag, Tiao-Yuang"

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Origin of hysteresis in current-voltage characteristics of polycrystalline silicon thin-film transistors
(2009-03-01)
Lin, Horng-Chih
;
Hung, Cheng-Hsiung
;
Chen, Wei-Chen
;
Lin, Zer-Ming
;
Hsu, Hsing-Hui
In this work we report the observation and characterization of a hysteresis phenomenon in the transfer characteristics of n-channel polycrystalline silicon (poly-Si) thin-film transistors (TFTs). Such phenomenon is observed in devices with fully depleted channel and not treated with hydrogen-related anneal. The origin of the hysteresis is identified to be related to the electron trapping and detrapping processes associated with the deep-level traps in the grain boundaries of the poly-Si channel.