Nanogenerators Based on Vertically Aligned InN Nanowires

TitleNanogenerators Based on Vertically Aligned InN Nanowires
Publication TypeJournal Article
Year of Publication2016
AuthorsLiu, G., S. Zhao, R. D. E. Henderson, Z. Leonenko, E. Abdel-Rahman, Z. Mi, and D. Ban
JournalNanoscale
Volume8
Start Page2097
Issue4
Pagination2097-2106
Date Published01/2016
Abstract

Piezoelectric nanogenerators (NGs) based on vertically aligned InN nanowires (NWs) are fabricated, characterized, and evaluated. In these NGs, arrays of p-type and intrinsic InN NWs prepared by plasma-assisted molecular beam epitaxy (MBE) demonstrate similar piezoelectric properties. The p-type NGs show 160% more output current and 70% more output power product than the intrinsic NGs. The features driving performance enhancement are reduced electrostatic losses due to better NW array morphology, improved electromechanical energy conversion efficiency due to smaller NW diameters, and the higher impedance of intrinsic NGs due to elevated NW surface charge levels. These findings highlight the potential of InN based NGs as a power source for self-powered systems and the importance of NW morphology and surface state in overall NG performance.

URLhttp://pubs.rsc.org/en/Content/ArticleLanding/2015/NR/C5NR06841J#!divAbstract
DOI10.1039/C5NR06841J
Refereed DesignationRefereed
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