Enhanced H2S sensing characteristics of Au modified Fe2O3 thin films
作者： Vishal Balouria , Niranjan S. Ramgir , A. Singh , A.K. Debnath , Aman Mahajan
DOI: 10.1016/J.SNB.2015.04.113
关键词: Matrix (chemical analysis) 、 Conductivity 、 Evaporation (deposition) 、 Nanotechnology 、 Chemical engineering 、 Surface modification 、 Sputtering 、 Thin film 、 Dual role 、 Materials science
摘要: Abstract H2S sensing characteristics of pure and Au modified Fe2O3 thin films have been investigated. were realized in two steps; first Fe deposited using electron-beam evaporation method subsequently subjected to oxidation at 800 °C O2 environment. Surface modification with was achieved by employing RF sputtering. Both samples exhibited an n-type conductivity pattern. Modification 2.33 at% resulted enhanced response 538% towards 10 ppm 250 °C, recovery times 1.65 27 min, respectively. The has attributed mainly the dual role i.e., forming nano-Schottky barriers host matrix as a promoter for spillover effect.
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