Advanced Materials

αThiophene octamer as a new class of photo-active material for photoelectrical conversion**

Authors

  • Naoki Noma,

    1. Department of Applied Chemistry Faculty of Engineering, Osaka University Yamadaoka, Suita, Osaka 565 (Japan)
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  • Toshimitsu Tsuzuki,

    1. Department of Applied Chemistry Faculty of Engineering, Osaka University Yamadaoka, Suita, Osaka 565 (Japan)
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  • Prof. Yasuhiko Shirota

    Corresponding author
    1. Department of Applied Chemistry Faculty of Engineering, Osaka University Yamadaoka, Suita, Osaka 565 (Japan)
    • Department of Applied Chemistry Faculty of Engineering, Osaka University Yamadaoka, Suita, Osaka 565 (Japan)
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  • **

    This work was supported in part by a Grant-in-Aid for scientific research No. 06226244 and No. 06453155 from the Ministry of Education, Science, and Culture of Japan.

Abstract

α-thiophene octamer (α-8T) is shown to be a suitable materials for application as the p-type semiconductor component in photovoltaic devices. Combined with a perylene pigment as the n-type semicondctor, the α-8T is used to produce a pn heterojunction cell which exhibits a fill factor of 0.5 ad a conversion efficiency of 0.6% for irradiation of while light, a performance comparable to that reported for copper- and titanyl-phthalocyanine-based devices. The application of α-8T would allow vacuum deposition techniques to be used in the production of the cells.

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