ZnO nanoparticles embedded silk fibroin - A piezoelectric composite for nanogenerator applications

Rengan, Aravind Kumar and Singh, Shiv Govind and Vanjari, Siva Rama Krishna (2022) ZnO nanoparticles embedded silk fibroin - A piezoelectric composite for nanogenerator applications. Nanotechnology, 33 (26). ISSN 0957-4484

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Abstract

This paper demonstrates a flexible nanogenerator (NG) using Silk-Zinc Oxide (ZnO) composite by exploiting the inherent piezoelectric properties of silk and ZnO. A direct precipitation method was employed to synthesize Zinc Oxide nanoparticles (NPs). Silk-ZnO composite film was then prepared by spin-coating the homogenous silk-ZnO solution. The composition and morphology of silk-ZnO composite were analyzed using various standard characterization procedures. The biocompatibility study of the composite film was also performed through cell viability testing. The utility of as prepared composites was demonstrated through the fabrication of piezoelectric nanogenerator. This hybrid nanogenerator was capable to generate a maximum open circuit voltage of 25 V (peak to peak value) in the bending state for a specific ZnO concentration. The output response of the nanogenerator exhibited a good correlation with the bending angle of the device. A peak outputpower density of 6.67 mW cm-3 was achieved from the nanogenerator. The fabricated prototype is efficient to light-up commercial red LEDs and to harvest energy from human body movement. The piezoelectric coefficient (d 33) of silk-ZnO composite film was also experimentally figured out. © 2022 IOP Publishing Ltd.

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IITH Creators:
IITH CreatorsORCiD
Rengan, Aravind Kumarhttps://orcid.org/0000-0003-3994-6760
Singh, Shiv Govindhttp://orcid.org/0000-0001-7319-879X
Vanjari, Siva Rama Krishnahttps://orcid.org/0000-0002-5880-4023
Item Type: Article
Uncontrolled Keywords: d 33; FESEM; nanogenerator; Silk; ZnO nanoparticles
Subjects: Electrical Engineering
Divisions: Department of Electrical Engineering
Depositing User: . LibTrainee 2021
Date Deposited: 23 Jun 2022 05:17
Last Modified: 28 Jun 2022 05:14
URI: http://raiith.iith.ac.in/id/eprint/9356
Publisher URL: https://doi.org/10.1088/1361-6528/ac5d9f
OA policy: https://v2.sherpa.ac.uk/id/publication/11334
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