Piezotronic Effect in Flexible Thin-film Based Devices

Authors

  • Xiaonan Wen,

    1. School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245, USA
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  • Wenzhuo Wu,

    1. School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245, USA
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  • Yong Ding,

    1. School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245, USA
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  • Zhong Lin Wang

    Corresponding author
    1. School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245, USA
    2. Beijing Institue of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, China
    • School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245, USA.
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Abstract

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Flexible piezotronic devices based on RF-sputtered piezoelectric semiconductor thin films have been investigated for the first time. The dominating role of the piezotronic effect over the geometrical and piezoresistive effect in the as-fabricated devices has been confirmed and the modulation effect of the piezopotential on charge carrier transport under different strains is subsequently studied. Moreover, it is also demonstrated that the UV sensing capability of the as-fabricated thin film based piezotronic device can be tuned by the piezopotential, showing significantly enhanced sensitivity and improved reset time under tensile strain.

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