Alternative molecular semiconductors for sensitizing nanocrystalline solar cells

Author

Chevaleevski, Oleg ; Larina, Lioudmila ; Myong, Seung Yeop ; Tsvetkov, Aleksei ; Lim, Koeng Su

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., KAIST Univ., Daejeon, South Korea

fYear

2002

fDate

19-24 May 2002

Firstpage

1318

Lastpage

1321

Abstract

The nanocrystalline TiO₂ based solar cells sensitized with different metal-phthalocyanines (MePc) have been fabricated and investigated. The energy conversion efficiency of TiO₂/MePc system several times exceeds the one obtained for a solid state cell based on the same type of materials. The optical absorption spectra of sensitized nanocrystalline layers were studied. It was shown that condensed dye molecule clusters agglomerated in the vicinity of the TiO₂ surface do not contribute to the energy conversion process. We have also investigated the phthalocyanine-fullerene composites promising for the improvement of the conversion efficiency of MePc-sensitized solid-stated and nanocrystalline photovoltaic cells.

Keywords

dyes; fullerene compounds; nanostructured materials; organic semiconductors; semiconductor device measurement; solar cells; titanium compounds; visible spectra; wide band gap semiconductors; MePc; TiO₂; condensed dye molecule clusters; energy conversion efficiency; metal-phthalocyanines; molecular semiconductors; nanocrystalline solar cells; optical absorption spectra; photovoltaic cells; phthalocyanine-fullerene composites; sensitizing; Absorption; Composite materials; Energy conversion; Glass; Nanostructures; Optical materials; Optical sensors; Photoconductivity; Photovoltaic cells; Solid state circuits;

fLanguage

English

Publisher

ieee

Conference_Titel

Photovoltaic Specialists Conference, 2002. Conference Record of the Twenty-Ninth IEEE

ISSN

1060-8371

Print_ISBN

0-7803-7471-1

Type

conf

DOI

10.1109/PVSC.2002.1190852

Filename

1190852