3d Printing of Flexible Ga-Doped Zno Films for Wearable Energy Harvesting Applications: Thermoelectric and Piezoelectric Nanogenerators

39 Pages Posted: 5 Dec 2023

See all articles by Aicha S. Lemine

Aicha S. Lemine

Qatar University

Jolly Bhadra

Qatar University

Kishor Kumar Sadasivuni

Qatar University

Anton Popelka

Qatar University

Swathi Yempally

Qatar University

Noora J. Al-Thani

Qatar University

Anwarul Hasan

Qatar University

Abstract

3D printing of energy harvesters using earth-abundant and non-toxic elements enables market competitiveness. The semiconducting behavior and non-centrosymmetric wurtzite crystal structure of Ga-doped Zinc Oxide (GZO) films are attractive for thermoelectric and piezoelectric nanogenerators. This work examines the thermal, structural, mechanical, thermoelectric, and piezoelectric properties of 3D-printed GZO nanocomposite films based on photocurable resin and GZO nanoparticles. TGA analysis revealed the thermal stability of nanocomposite film from room temperature to 230°C for safe application in wearable energy harvesters. XRD analysis disclosed the crystallinity of nanocomposite film having diffraction peaks consistent with ZnO hexagonal wurtzite structure peaks. SEM-EDS analysis showed the nanocomposite film with a bulk-like microstructure and a homogenous elemental distribution. XPS analysis confirmed the development of nanocomposite film from multiphase constituents combining Ga 2p, Zn 2p, O 1s, and C 1s core levels. C-AFM analysis identified the nanocomposite film as having a fine granular structure and conductive domain compared to the neat resin film. The GZO nanofillers tailor the stress-strain behavior and lead to flexibility enhancements of nanocomposite film. The developed photocurable resin-GZO nanocomposite film exhibited a thermoelectric power factor of 261nW/m.K2 at room temperature and piezoelectric power densities of 591nW/cm2 and 207nW/cm2 at bending and tapping deformations.

Keywords: 3D printing, Thermoelectric, Piezoelectric, Ga-ZnO, Flexible, Energy harvesting.

Suggested Citation

Lemine, Aicha S. and Bhadra, Jolly and Sadasivuni, Kishor Kumar and Popelka, Anton and Yempally, Swathi and Al-Thani, Noora J. and Hasan, Anwarul, 3d Printing of Flexible Ga-Doped Zno Films for Wearable Energy Harvesting Applications: Thermoelectric and Piezoelectric Nanogenerators. Available at SSRN: https://ssrn.com/abstract=4654515 or http://dx.doi.org/10.2139/ssrn.4654515

Aicha S. Lemine

Qatar University ( email )

College of Law
Qatar University
Doha, 2713
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Jolly Bhadra (Contact Author)

Qatar University ( email )

College of Law
Qatar University
Doha, 2713
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Kishor Kumar Sadasivuni

Qatar University ( email )

College of Law
Qatar University
Doha, 2713
Qatar

Anton Popelka

Qatar University ( email )

College of Law
Qatar University
Doha, 2713
Qatar

Swathi Yempally

Qatar University ( email )

College of Law
Qatar University
Doha, 2713
Qatar

Noora J. Al-Thani

Qatar University ( email )

College of Law
Qatar University
Doha, 2713
Qatar

Anwarul Hasan

Qatar University ( email )

College of Law
Qatar University
Doha, 2713
Qatar

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