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Browsing by Author "Wu, Chien Hung"

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    High-Mobility InGaZnO TFTs Using Atmospheric Pressure Plasma Jet Technique and 248-nm Excimer Laser Annealing
    (2014-10-01)
    Wu, Chien Hung
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    Huang, Hau Yuan
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    Wang, Shui Jinn
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    Chang, Kow Ming
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    電子工程學系及電子研究所
    With the advantages of low apparatus cost, better suitability for large-scale fabrication, and low thermal budget, the nonvacuum atmospheric pressure plasma jet technique and 248-nm excimer laser annealing were employed for the fabrication of indium gallium zinc oxide (InGaZnO) thin-film transistors. Devices with a 150-mJ/cm(2) laser demonstrated excellent electrical characteristics with reduced OFF-current, including a high channel mobility of 21.2 cm(2)/V-s, the ON-OFF current ratio of 7 x 10(5), and a subthreshold swing of 0.48 V/decade. The improvements are attributed to the increase of oxygen vacancies in the InGaZnO channel and the reduction of traps at the ZrO2/InGaZnO interface and InGaZnO bulk.