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

Energies

Takeo Oku¹  Akihiro Takeda²  Akihiko Nagata²  Tatsuya Noma²  Atsushi Suzuki² 

[1] Department of Materials Science, The University of Shiga Prefecture, Hassaka 2500, Hikone, Shiga 522-8533, Japan;

关键词: fullerene;    solar cells;    porphyrin;    CuInS₂;    diamond;   

DOI  :  10.3390/en3040671

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2010 by the authors; licensee Molecular Diversity Preservation International, Basel, Switzerland.