Cited 27 time in webofscience Cited 27 time in scopus

Hierarchical ZnO Nanorods on Si Micropillar Arrays for Performance Enhancement of Piezoelectric Nanogenerators

Title
Hierarchical ZnO Nanorods on Si Micropillar Arrays for Performance Enhancement of Piezoelectric Nanogenerators
Authors
Hasan, Md RoqibulBaek, Seong-HoSeong, Kwang SuKim, Jae HyunPark, Il-Kyu
DGIST Authors
Baek, Seong-Ho; Kim, Jae Hyun
Issue Date
2015-03-18
Citation
ACS Applied Materials and Interfaces, 7(10), 5768-5774
Type
Article
Article Type
Article
Keywords
Electronic Guidance SystemsEnhancement MechanismHeterojunctionHeterojunctionsHierarchical NanostructuresNanogeneratorsNanorodsNanotechnologyOptical InvestigationPerformance EnhancementsPiezoelectric NanogeneratorPiezoelectric NanogeneratorsPiezoelectric PotentialPiezoelectricitySiliconZinc OxideZnO NanorodZnO Nanorods
ISSN
1944-8244
Abstract
Enhanced output power from a ZnO nanorod (NR)-based piezoelectric nanogenerator (PNG) is demonstrated by forming a heterojunction with Si micropillar (MP) array. The length of the SiMP array, which was fabricated by electrochemical etching, was increased systematically from 5 to 20 μm by controlling the etching time. Our structural and optical investigations showed that the ZnO NRs were grown hierarchically on the SiMPs, and their crystalline quality was similar regardless of the length of the underlying SiMPs. The peak output voltage from the ZnO NR-based PNG was greatly increased by ∼5.7 times, from 0.7 to 4.0 V, as the length of the SiMP arrays increased from 0 (flat substrate) to 20 μm. The enhancement mechanism was explained based on the series connection of the ZnO NRs regarded as a single source of piezoelectric potential by creating a heterojunction onto the SiMP arrays. (Graph Presented). © 2015 American Chemical Society.
URI
http://hdl.handle.net/20.500.11750/5199
DOI
10.1021/am5085379
Publisher
American Chemical Society
Related Researcher
Files:
There are no files associated with this item.
Collection:
Smart Textile Convergence Research Group1. Journal Articles


qrcode mendeley

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE