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A flexible and transparent graphene/ZnO nanorod hybrid structure fabricated by exfoliating a graphite substrate
- A flexible and transparent graphene/ZnO nanorod hybrid structure fabricated by exfoliating a graphite substrate
- Nam, Gwang-Hee; Baek, Seong-Ho; Cho, Chang-Hee; Park, Il-Kyu
- DGIST Authors
- Baek, Seong-Ho; Cho, Chang-Hee
- Issue Date
- Nanoscale, 6(20), 11653-11658
- Article Type
- Alternating Current; Current Voltage Characteristics; Exfoliated Graphene; Fabrication; Few-Layer Graphene; Graphene; Graphite; Graphite Substrate; I-V Characteristics; Mechanical Exfoliation; Nanorods; Nanotechnology; Piezoelectric Nanogenerator; Raman Scattering; Transparent Graphene; Zinc Oxide
- 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. © 2014 the Partner Organisations 2014.
- Royal Society of Chemistry
- Related Researcher
Nanoscale Optoelectronic Materials Laboratory
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