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Vol. 95, Issue 8, August 2008, pp.81-85




Resistive Ammonia Gas Sensor Based on Non-Stoichiometric Copper Sulfide Thin Films


Abhay A. Sagade# and Ramphal Sharma,* Rajaram S. Mane, and Sung-Hwan Han,

 Thin Film and Nanotechnology Laboratory, Department of Physics, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad 431004. M. S., India

Present address: Department of Chemistry, Hanyang University, Sungdong-Ku, Haengdang dong 17, Seoul, South Korea 133-791

E-mail: rps.phy@gmail.com



Received: 2 July 2008   /Accepted: 15 August 2008   /Published: 25 August 2008


Abstract: Resistive ammonia gas sensor is fabricated by using solution growth technique deposited copper sulfide (Cu1.8S) thin films. Structural and opto-electronic properties of the films are studied by X-ray diffraction, atomic force microscopy, optical absorbance and electrical resistance. Ammonia gas sensor response measured from 20 to 500 ppm concentration at room temperature (300 K). The sensor response is increases with gas concentration.


Keywords:  Ammonia; Copper sulfide; Gas sensor; Resistance; Stoichiometry


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