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Highly Sensitive \beta {-}{\rm Ga}_{2}{\rm O}_{3} Nanowire Nanowires Isopropyl Alcohol Sensor

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7 Author(s)
Ya-Ling Wu ; Dept. of Electr. Eng., Nat. Cheng Kung Univ., Tainan, Taiwan ; Qiuping Luan ; Shoou-Jinn Chang ; Zhiyong Jiao
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We report the growth of β-Ga2O3 nanowires using a vapor phase transport method and the fabrication of β-Ga2O3 nanowire gas sensor. The β-Ga2O3 nanowire sensor shows reversible response to isopropyl alcohol (IPA) gas at temperature as low as 100 °C. With 300 ppm IPA gas introduced, it was found that measured responses were ~ 7.5%, 13.5%, and 23% when the sensor was operated at 100 °C, 200 °C, and 300 °C, respectively. It was also found that the responses measured at 300 °C were ~ 9%, 15.5%, 24%, and 33% when the injected IPA gas concentrations were 100, 200, 300, and 400 ppm, respectively.

Published in:

Sensors Journal, IEEE  (Volume:14 ,  Issue: 2 )

Date of Publication:

Feb. 2014

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