journal article·2018-11-01Open access

Heavily tin-doped indium oxide nano-pyramids as high-performance gas sensor

Qiang Li, Yuantao Zhang, Zuming Wang, Yufeng Li, Wen Ding, Tao Wang, Feng Yun

AIP Advances· Volume 8· Issue 11

Abstract

Heavily Sn-doped In2O3nano-pyramids with a Sn percentage of 19.97% by weight have been prepared by sputtering technique. The nano-pyramids with smooth facets and a sharp tip have been achieved by deposition on Sn-metal particles, leading to a diameter of ∼100nm. The gas sensors realized from these pyramids are highly sensitive to ethanol gas, and the sensitivity is about 133.99 against 200ppm ethanol at 250°C. Good sensitivity characteristics have been obtained even at a low temperature of down to 50°C. The high response and low working temperature demonstrate the potential application of heavily Sn-doped In2O3 nano-pyramids for fabricating gas sensors.
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Research context

OpenAlex topics: Gas Sensing Nanomaterials and Sensors · Advanced Chemical Sensor Technologies · Analytical Chemistry and Sensors

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Affiliations

Key Laboratory of Physical Electronics and Devices for Ministry of Education and Shaanxi Provincial Key Laboratory of Photonics & Information Technology, Xi’an Jiaotong University 1 , Xi’an, Shaanxi 710049, P. R. China

School of Electronic and Information Engineering, Xi’an Jiaotong University 2 , Xi’an, Shaanxi 710049, P. R. China

Department of Electronic and Electrical Engineering, University of Sheffield 3 , Mappin Street, Sheffield S1 3JD, United Kingdom

Funding

National Key R&D Program of China · China Postdoctoral Science Foundation · Natural Science Foundation of Shaanxi Province

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