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Optical Band Gap Excitation And Photoelectron Generation In Titanium Dioxide-Based Solid State Solar Cells

Author

Listed:
  • M. RUSOP

    (Department of Environmental Technology and Urban Planning, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan)

  • T. SHIRATA

    (Department of Environmental Technology and Urban Planning, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan)

  • T. SOGA

    (Department of Environmental Technology and Urban Planning, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan)

  • T. JIMBO

    (Department of Environmental Technology and Urban Planning, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan)

Abstract

The properties and optical band gap excitation of nanoporous titanium dioxide(TiO2)and transparent semiconducting copper iodide(CuI)films prepared by aXeClexcimer laser were investigated. TheCuIfilms exhibited optical transmittance over 80% in the wavelength range from 400 to 900 nm with minimum resistivity of about 2 KΩcm. The optical absorption of these films showed a remarkable blue shift compared to that of polycrystalline ofCuI, which can be explained from the formation of ultra fine ofCuIgrains. The properties of pulsed laser depositedCuIandTiO2in power output ofp-CuI|dye|n-TiO2cells were studied. The photoelectron generation and mechanism in fabricatedp-CuI|dye|n-TiO2cells were also studied. An efficient charge generation was observed through the illumination of theTiO2layer of the fabricatedp-CuI|dye|n-TiO2cells. The band gap excitation ofTiO2was observed only under illumination throughTiO2layer. The adsorbed dye molecules to theTiO2surface act as a relay, especially under illumination throughTiO2layer in the wave range region of 300–400 nm.

Suggested Citation

  • M. Rusop & T. Shirata & T. Soga & T. Jimbo, 2005. "Optical Band Gap Excitation And Photoelectron Generation In Titanium Dioxide-Based Solid State Solar Cells," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 12(05n06), pages 681-689.
    • Handle: RePEc:wsi:srlxxx:v:12:y:2005:i:05n06:n:s0218625x05007694
    DOI: 10.1142/S0218625X05007694
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