A flexible and transparent graphene/ZnO nanorod hybrid structure fabricated by exfoliating a graphite substrate

Title
A flexible and transparent graphene/ZnO nanorod hybrid structure fabricated by exfoliating a graphite substrate
Author(s)
박일규남광희백성호[백성호]조창희[조창희]
Keywords
FEW-LAYER GRAPHENE; RAMAN-SPECTROSCOPY; ZNO NANORODS; OXIDE; NANOGENERATORS; PHOTOACTIVITY; ELECTRODES; NANOWIRES; GROWTH
Issue Date
201410
Publisher
ROYAL SOC CHEMISTRY
Citation
NANOSCALE, v.6, no.20, pp.11653 - 11658
Abstract
We demonstrate the fabrication of a graphene/ZnO nanorod (NR) hybrid structure by mechanical exfoliation of ZnO NRs grown on a graphite substrate. We confirmed the existence of graphene sheets on the hybrid structure by analyzing the Raman spectra and current-voltage (I-V) characteristics. The Raman spectra of the exfoliated graphene/ZnO NR hybrid structure show G and 2D band peaks that are shifted to lower wavenumbers, indicating that the exfoliated graphene layer exists under a significant amount of strain. The I-V characteristics of the graphene/ZnO NR hybrid structure show current flow through the graphene layer, while no current flow is observed on the ZnO NR/polydimethylsiloxane (PDMS) composite without graphene, thereby indicating that the few-layer graphene was successfully transferred onto the hybrid structure. A piezoelectric nanogenerator is demonstrated by using the fabricated graphene/ZnO NR hybrid structure. The nanogenerator exhibits stable output voltage up to 3.04 V with alternating current output characteristics.
URI
http://hdl.handle.net/YU.REPOSITORY/30616http://dx.doi.org/10.1039/c4nr02318h
ISSN
2040-3364
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공과대학 > 전자공학과 > Articles
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