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Photoinduced Memory Effects based on Poly(3-hexylthiophene) and Al Interface

Published online by Cambridge University Press:  01 February 2011

Keiichi Kaneto ,
Mitsuru Ujimoto  and
Wataru Takashima
Keiichi Kaneto
Affiliation:
Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, 2–4 Wakamatsu-ku, Kitakyushu, Fukuoka, 808–0196 JAPAN
Mitsuru Ujimoto
Affiliation:
Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, 2–4 Wakamatsu-ku, Kitakyushu, Fukuoka, 808–0196 JAPAN
Wataru Takashima
Affiliation:
Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, 2–4 Wakamatsu-ku, Kitakyushu, Fukuoka, 808–0196 JAPAN
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Abstract

Organic memory cells have been constructed utilizing conducting polymer, poly(3-hexylthiophene), PHT. The PHT film with Au electrodes at the bottom was coated with ultra thin Al having the thickness of 1 nm on the top. The cell showed the large photoconductivity, which was measured between Au bottom electrodes. The photoconductivity lasted for several hours after turn off the illumination, indicating photo induced memory effect. The phenomenon is discussed in terms of the persistent photoconduction, which is resulted from the electron trapping at Al donor sites in the depletion layer formed near the top of film.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 846: Symposium DD – Organic and Nanocomposite Optical Materials , 2004 , DD6.9
Copyright
Copyright © Materials Research Society 2005

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References

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