| Summary: | 碩士 === 國立中興大學 === 物理學系所 === 100 === One dimensional nanostructures have been demonstrated as well performance materials for fabricating optics, bioengineering , gas sensor, solar cell and LED etc, due to their large surface-to-volume ratio and radial electron transport.
Using schottky contact device as a sensor has gigantic sensitivity for UV, gas and biomolecule detection. For commercial application, the signal current output should be improved to milli Ampere order.
In this study we show around 8 mA signal current output for UV detection. Compare to our research group work, the single ZnO nanowire schottky contact (SZNSC) sensing device, the current output of the array ZnO nanowire schottky contact (AZNSC) sensing device has improved by 3 orders of magnitude. This AZNSC device also has good response. For gas sensing, the sensitivity of AZNSC device has 2 orders of magnitude variation in room temperature. The research work provides a potential method for commercial application.
Schottky-contacted nanodevice has great sensitivity. The signal output can be gigantic enhanced by using nanowire arrays as nanodevice. In this work, we have experimentally demonstrated that AZNSC device enhances signal output current and also improved the ability of gas sensing at room temperature. Schottky-contacted nano-deivce has great potential for UV, gas and bio-molecule sensor application.
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