Hydrogen Sensing Properties of Copper-Doped Zinc Oxide Thin Films


A highly sensitive hydrogen gas sensor has been developed utilizing 3percent copper-doped zinc oxide thin films. These films were deposited using pulsed laser deposition technique on quartz substrates with predeposited interdigitated platinum electrodes. The deposited films were characterized by X-ray diffraction and atomic force microscopy. The hydrogen sensing properties of the sensor were studied at 3 operating temperatures, viz., fifty °C, a hundred °C, and a hundred and fifty °C. We tend to observed that the sensor shows smart performance even at an occasional operating temperature of fifty °C for a terribly tiny concentration of hydrogen (10 ppm).

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