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Energies 2010, 3(4), 671-685; doi:10.3390/en3040671

Fabrication and Characterization of Fullerene-Based Bulk Heterojunction Solar Cells with Porphyrin, CuInS2, Diamond and Exciton-Diffusion Blocking Layer

Department of Materials Science, The University of Shiga Prefecture, Hassaka 2500, Hikone, Shiga 522-8533, Japan
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Author to whom correspondence should be addressed.
Received: 26 February 2010 / Accepted: 15 March 2010 / Published: 8 April 2010
(This article belongs to the Special Issue Solar Cells)
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Abstract

Fullerene-based bulk heterojunction solar cells were fabricated, and the electronic and optical properties were investigated. C60 were used as n-type semiconductors, and porphyrin, CuInS2 and diamond were used as p-type semiconductors. An effect of exciton-diffusion blocking layer of perylene derivative on the solar cells between active layer and metal layer was also investigated. Optimized structures with the exciton-diffusion blocking layer improved conversion efficiencies. Electronic structures of the molecules were investigated by molecular orbital calculation, and energy levels of the solar cells were discussed. Nanostructures of the solar cells were investigated by transmission electron microscopy, electron diffraction and X-ray diffraction, which indicated formation of mixed nanocrystals. View Full-Text
Keywords: fullerene; solar cells; porphyrin; CuInS2; diamond fullerene; solar cells; porphyrin; CuInS2; diamond
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Oku, T.; Takeda, A.; Nagata, A.; Noma, T.; Suzuki, A.; Kikuchi, K. Fabrication and Characterization of Fullerene-Based Bulk Heterojunction Solar Cells with Porphyrin, CuInS2, Diamond and Exciton-Diffusion Blocking Layer. Energies 2010, 3, 671-685.

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