Graphene modified vanadium pentoxide nanobelts as an efficient counter electrode for dye-sensitized solar cells

Title
Graphene modified vanadium pentoxide nanobelts as an efficient counter electrode for dye-sensitized solar cells
Authors
민병권이민오Suresh Kannan Balasingam고요한정후영윤용주전용석
Keywords
graphene; vanadium; DSSC
Issue Date
2016-05
Publisher
Synthetic metals
Citation
VOL 215, 110-115
Abstract
Efficient dye-sensitized solar cells (DSSCs) were fabricated using graphene modified vanadium pentoxide nanobelts (GVNBs) as a cost-effective counter electrodes (CEs). GVNBs were synthesized by facile one-step hydrothermal method without using any reducing agent and harmful solvents. These novel nanocomposite have been tested as a counter electrode in DSSCs for the first time, which showed high solar to electrical energy conversion efficiency. The GVNBs showed the excellent electrocatalytic activity for the reduction of triiodide to iodide due to the synergetic effect between one-dimensional shape of vanadium pentoxide nanobelts and reduced graphene oxide. The DSSCs based on the GVNBs CEs have reached a high power conversion efficiency of 6.17%, which is comparable to that (7.98%) of the conventional platinum (Pt)-based CEs. This result indicate that GVNBs can be used as an alternative to conventional Pt-based CEs for the highly efficient DSSCs.
URI
http://pubs.kist.re.kr/handle/201004/59112
ISSN
03796779
Appears in Collections:
KIST Publication > Article
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