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Hydrothermal Synthesis of In2O3 :Ag Nanostructures for NO2 Gas Sensor

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Abstract

In this work, Ag doped In2O3 nanostructure materials were successfully synthesis using a simple hydrothermal process with different Ag concentration (3,6,9)%. The structural properties and morphology of the obtained nanostructure film are characterized by X-ray diffraction and field emission scanning electron microscopy (FE-SEM). The structural analysis shows a highly crystalline of indium oxide with a cubic phase and the crystallite size decreased with the increasing of doping concentration. The current–voltage results from devices indicate that In2O3 film with 9% Ag concentration has better conduction film. Gas sensing performance was studied for NO2 gas with different concentration (50,100,150) ppm at operating temperature 100 °C. The maximum sensitivity (S = 79 %) was found at doping concentration 9% Ag.

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Acknowledgments

The authors would like to acknowledge the support from the staff of material Laboratory in physics department al Mustansiriyah University.

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Authors and Affiliations

  1. Department of Physics, College of Science, Mustansiriyah University, Baghdad, Iraq

    Raad S. Sabry, Ibrahim R. Agool & Asaad M. Abbas

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  1. Raad S. Sabry
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  2. Ibrahim R. Agool
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  3. Asaad M. Abbas
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Correspondence to Asaad M. Abbas.

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Sabry, R.S., Agool, I.R. & Abbas, A.M. Hydrothermal Synthesis of In2O3 :Ag Nanostructures for NO2 Gas Sensor. Silicon 11, 2475–2478 (2019). https://doi.org/10.1007/s12633-018-9999-5

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  • DOI: https://doi.org/10.1007/s12633-018-9999-5

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