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Vol. 101, Issue 2, February 2009, pp.90-95





Surface Morphology Dependent Copper Sulphide Ammonia Gas Sensor Working at Room Temperature:
Effect of SHI Irradiation


1,2,4 Ramphal Sharma, 1Abhay A. Sagade, 3J. C. Vyas , 3P. K. Nema, 2Anil Ghule and 2Sung-Hwan Han

1Thin Film and Nanotechnology Laboratory, Department of Physics,
Dr. Babasaheb Ambedkar Marathwada, University, Aurangabad - 431004, Maharashtra, India.

2Research Institute for Natural Sciences, Department of Chemistry, Hanyang University, Sungdong-Ku, Haengdang-dong 17, Seoul, South Korea 133-791

3TPPED, Bhabha Atomic Research Centre, Mumbai, India

Tel.: 0082-2-22925212, fax: 0082-2-2299076 (South Korea)

1,4E-mail: saa_phy@yahoo.com, rps.phy@gmail.com



Received: 27 December 2008   /Accepted: 20 February 2009   /Published: 28 February 2009


Abstract: We report the synthesis of copper sulphide (CuS) nano-pillars on copper sulphide thin film surface by using swift heavy ion (SHI) irradiation. Thin films of CuS are irradiated with 100 MeV gold ions at fluence varying from 1011 to 5 1012 ions/cm2. These nanostructures grown on the surface of copper sulphide has been used for the detection of ammonia gas at room temperature. The time dependent surface conductance measurements show the utility of copper sulphide for the detection of ammonia. It is observed that the response of the material is highly influenced by the irradiation fluence.


Keywords: AFM, Ammonia, Copper sulphide, SHI, Surface energy, Thermal spike


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