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

Faezeh Ejehi; Leyla Shooshtari; Raheleh Mohammadpour; Elham Asadian; Pezhman Sasanpour

doi:10.1088/1361-6528/ac8a52

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

Nanotechnology. 2022 Sep 7;33(47). doi: 10.1088/1361-6528/ac8a52.

Authors

Faezeh Ejehi¹, Leyla Shooshtari¹, Raheleh Mohammadpour¹, Elham Asadian^{2

3}, Pezhman Sasanpour^{4

5}

Affiliations

¹ Institute for Nanoscience and Nanotechnology, Sharif University of Technology, Tehran, 14588-89694, Iran.
² Medical Nanotechnology and Tissue Engineering Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
³ Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, 19839-63113, Iran.
⁴ Department of Medical Physics and Biomedical Engineering, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
⁵ School of Nanoscience, Institute for Research in Fundamental Sciences (IPM), PO Box 19395-5531, Tehran, Iran.

PMID: 35977448
DOI: 10.1088/1361-6528/ac8a52

Abstract

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^-1for conventional GO-photoresistors up to 13.41 mA W^-1by 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.

Keywords: graphene oxide; photodetection; self-powered; triboelectric nanogenerator; ultraviolet; visible light.