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Direct-current flexible piezoelectric nanogenerators based on two-dimensional ZnO nanosheet

Title
Direct-current flexible piezoelectric nanogenerators based on two-dimensional ZnO nanosheet
Authors
Lee YoonjungKim, SoheeKim, DaeyeongLee, CheoljaePark, HyojinLee, Ju-Hyuck
DGIST Authors
Lee Yoonjung; Kim, Sohee; Kim, Daeyeong; Lee, Cheoljae; Park, Hyojin; Lee, Ju-Hyuck
Issue Date
2020-04
Citation
Applied Surface Science, 509, 145328
Type
Article
Article Type
Article
Author Keywords
PiezoelectricZinc oxide2-DimensionalDirect current
Keywords
ENERGY-CONVERSIONDRIVEN
ISSN
0169-4332
Abstract
Direct current (DC) power generation of piezoelectric nanogenerator (PNG) is promising for the realization of future self-powered electronics. Wurtzite structured two-dimensional (2-D) piezoelectric zinc oxide (ZnO) nanosheets can convert mechanical energy into electrical energy, and it produce DC output power. In this present work, we report DC power generation of PNGs based on the 2-D ZnO nanosheets. The growth condition has been optimized for the power generation, and effects of the surface morphologies and orientations have been investigated. The optimized PNGs produced voltage, current density and power density of up to 0.9 V, 16.5 μA cm−2 and 600 nW cm−2, respectively, for over 4000 cycles upon 4 kgf of force. © 2020 Elsevier B.V.
URI
http://hdl.handle.net/20.500.11750/11494
DOI
10.1016/j.apsusc.2020.145328
Publisher
Elsevier BV
Related Researcher
  • Author Lee, Ju-Hyuck Energy Conversion Materials Engineering Laboratory
  • Research Interests Energy Harvesting; Synthesis of Various Nano/Microstructured Energy Materials; Piezoelectric Generator; Triboelectric Generator; Bio-Compatible Energy Materials and Generator; Biomimetic Biomolecule based Energy Materials and Devices
Files:
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Collection:
Department of Energy Science and EngineeringEnergy Conversion Materials Engineering Laboratory1. Journal Articles


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