Ultraviolet Light-Assisted Copper Oxide Nanowires Hydrogen Gas Sensor

Nabihah Sihar, Teck Yaw Tiong, Chang Fu Dee, Poh Choon Ooi, Azrul Azlan Hamzah, Mohd Ambri Mohamed, Burhanuddin Yeop Majlis

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We fabricated copper oxide nanowires (CuO NWs) ultraviolet (UV) light-assisted hydrogen gas sensor. The fabricated sensor shows promising sensor response behavior towards 100 ppm of H2 at room temperature and elevated temperature at 100 °C when exposed to UV light (3.0 mW/cm2). One hundred-cycle device stability test has been performed, and it is found that for sample elevated at 100 °C, the UV-activated sample achieved stability in the first cycle as compared to the sample without UV irradiation which needed about 10 cycles to achieve stability at the initial stage, whereas the sample tested at room temperature was able to stabilize with the aid of UV irradiation. This indicates that with the aid of UV light, after some “warming up” time, it is possible for the conventional CuO NW sensor which normally work at elevated temperature to function at room temperature because UV source is speculated to play a dominant role to increase the interaction of the surface of CuO NWs and hydrogen gas molecules absorbed after the light exposure.

Original languageEnglish
Article number150
JournalNanoscale Research Letters
Volume13
DOIs
Publication statusPublished - 1 Jan 2018

Fingerprint

Copper oxides
copper oxides
Chemical sensors
ultraviolet radiation
Nanowires
nanowires
Hydrogen
Water
sensors
hydrogen
gases
room temperature
Sensors
stability tests
Temperature
cycles
irradiation
Irradiation
Gases
heating

Keywords

  • Copper oxide nanowire
  • Hydrogen gas sensor
  • Stability
  • UV light

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Ultraviolet Light-Assisted Copper Oxide Nanowires Hydrogen Gas Sensor. / Sihar, Nabihah; Tiong, Teck Yaw; Dee, Chang Fu; Ooi, Poh Choon; Hamzah, Azrul Azlan; Mohamed, Mohd Ambri; Yeop Majlis, Burhanuddin.

In: Nanoscale Research Letters, Vol. 13, 150, 01.01.2018.

Research output: Contribution to journalArticle

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AU - Dee, Chang Fu

AU - Ooi, Poh Choon

AU - Hamzah, Azrul Azlan

AU - Mohamed, Mohd Ambri

AU - Yeop Majlis, Burhanuddin

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AB - We fabricated copper oxide nanowires (CuO NWs) ultraviolet (UV) light-assisted hydrogen gas sensor. The fabricated sensor shows promising sensor response behavior towards 100 ppm of H2 at room temperature and elevated temperature at 100 °C when exposed to UV light (3.0 mW/cm2). One hundred-cycle device stability test has been performed, and it is found that for sample elevated at 100 °C, the UV-activated sample achieved stability in the first cycle as compared to the sample without UV irradiation which needed about 10 cycles to achieve stability at the initial stage, whereas the sample tested at room temperature was able to stabilize with the aid of UV irradiation. This indicates that with the aid of UV light, after some “warming up” time, it is possible for the conventional CuO NW sensor which normally work at elevated temperature to function at room temperature because UV source is speculated to play a dominant role to increase the interaction of the surface of CuO NWs and hydrogen gas molecules absorbed after the light exposure.

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