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Self-powered ultraviolet/visible photodetector based on graphene-oxide via triboelectric nanogenerators performing by finger tapping

Ejehi, F ; Sharif University of Technology | 2022

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  1. Type of Document: Article
  2. DOI: 10.1088/1361-6528/ac8a52
  3. Publisher: Institute of Physics , 2022
  4. Abstract:
  5. Self-sufficient power sources provide a promising application of abundant electronic devices utilized in detection of ambient properties. Recently, triboelectric nanogenerators (TENGs) have been widely investigated to broaden the self-powered systems by converting the ambient mechanical agitations into electrical voltage and current. Graphene oxide (GO), not only for sensing applications but also as a brilliant energy-related nanomaterial, provides a wide range of controllable bandgap energies, as well as facile synthesis route. In this study, GO-based self-powered photodetectors have been fabricated by conflating the photosensitivity and triboelectric characteristics of freestanding GO paper. In this regard, photodetection via TENGs has been investigated in two forms of active and passive circuits for ultraviolet (UV) and visible illumination. The photodetector responsivity upon UV enhanced from 0.011 mA W−1 for conventional GO-photoresistors up to 13.41 mA W−1 by active photodetection setup. Moreover, applying the active-TENG improved the efficiency from 0.25% (in passive TENG) to 4.21%. Our findings demonstrate that active TENGs might enable materials with insignificant optical response to represent considerably higher light-sensitivity by means of synergizing the effect of TENG output changes with opto-electronical properties of desired layers. © 2022 IOP Publishing Ltd
  6. Keywords:
  7. Graphene oxide ; Photodetection ; Self-powered ; Triboelectric nanogenerator ; Ultraviolet ; Visible light ; Graphene ; Light ; Light sensitive materials ; Photodetectors ; Photons ; Photosensitivity ; Triboelectricity ; Ambients ; Finger tapping ; Graphene oxides ; Nanogenerators ; Photo detection ; Property ; Self-powered ; Triboelectric nanogenerator ; Ultraviolet ; Visible light ; Nanogenerators
  8. Source: Nanotechnology ; Volume 33, Issue 47 , 2022 ; 09574484 (ISSN)
  9. URL: https://iopscience.iop.org/article/10.1088/1361-6528/ac8a52