The Preparation of Alumina Particles Wrapped in Few-layer Graphene Sheets and Their Application to Dye-sensitized Solar Cells

Title
The Preparation of Alumina Particles Wrapped in Few-layer Graphene Sheets and Their Application to Dye-sensitized Solar Cells
Author(s)
정우식안광순서상원[서상원]박정현[박정현]민봉기
Keywords
EXFOLIATED GRAPHITE OXIDE; CARBON-MONOXIDE; CARBOTHERMAL REDUCTION; RAMAN-SPECTROSCOPY; FILMS; GAS; EFFICIENCY; NANOSHEETS; DISORDER; NITRIDE
Issue Date
201105
Publisher
KOREAN CHEMICAL SOC
Citation
BULLETIN OF THE KOREAN CHEMICAL SOCIETY, v.32, no.5, pp.1579 - 1582
Abstract
Alumina particles wrapped in few-layer graphene sheets were prepared by calcining aluminum nitride powders under a mixed gas flow of carbon monoxide and argon. The graphene sheets were characterized by powder X-ray diffraction (XRD), Raman spectroscopy, electron energy loss spectroscopy, and high-resolution transmission electron microscopy. The few-layer graphene sheets, which wrapped around the alumina particles, did not exhibit any diffraction peaks in the XRD patterns but did show three characteristic bands (D, G, and 2D bands) in the Raman spectra. The dye-sensitized solar cell (DSSC) with the alumina particles wrapped in few-layer graphene sheets exhibited significantly improved overall energy-conversion efficiency, compared to conventional DSSC, due to longer electron lifetime.
URI
http://hdl.handle.net/YU.REPOSITORY/25239http://dx.doi.org/10.5012/bkcs.2011.32.5.1579
ISSN
0253-2964
Appears in Collections:
공과대학 > 화학공학부 > Articles
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