Journal
APPLIED SURFACE SCIENCE
Volume 529, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.apsusc.2020.147135
Keywords
ZnO NWs; PMMA; Flexible metallic substrate; Piezoelectric effect; Energy harvesting
Categories
Funding
- EU (ERDF) [PN-III-P1-1.2-PCCDI-2017-0419]
- Romanian Government [POS-CCE O 2.2.1, 19/01.03.2009]
- Romanian Academy
- Hungarian Academy
- National Development Agency of Hungary [OTKA K131515]
Ask authors/readers for more resources
This paper reports the comparative study of piezoelectric nanostructures deposited on metallic flexible substrate versus rigid substrates as a new architecture for energy harvesters. Rigid metallic substrates are multi-layered types of Pt/Ti/SiO2/Si or Au/Ti/SiO2/Si while Ti foil is a flexible metallic substrate. The active piezo-layer consisted of a vertical ZnO nanowires (ZnO NWs) array grown by the hydrothermal method at low temperature, on a previously deposited crystalline seed (nucleation) sol-gel layer and covered with a layer of polymethylmethacrylate (PMMA). The new obtained nanostructures have been characterized in different stages of preparation by X-Ray Diffraction, Scanning and Transmission Electron Microscopy, Atomic Force Microscopy, Spectroscopic Ellipsometry. The piezoelectric performance of PMMA/(ZnO NWs)/Ti structures was evaluated by measuring the d(33) coefficient. Results show that ZnO nanowires have successfully grown on the flexible substrates with a piezoelectric coefficient four times greater than on rigid substrates. By improving vertical integration of ZnO NWs on flexible metallic substrate, PMMA/(ZnO NWs)/Ti affordable nanostructures open the way towards integration in wireless or defence technologies and in wearable or implantable biomedical systems as efficient harvester.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available