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Chem. J. Chinese Universities ›› 2001, Vol. 22 ›› Issue (6): 1010.

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Studies on the Surface Photovoltage Property of α-Terthiophene

CAO Chang-Sheng1, WANG Ce1, CAO Yaan2, SHI Yan-Hui1, LI Tie-Jin1   

  1. 1. Department of Chemistry, Jilin University, Changchun 130023, China;
    2. Institute of Chemistry, Chinese Academy of Sciences, Beijing 100101, China
  • Received:1999-08-24 Online:2001-06-24 Published:2001-06-24

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Abstract: The behavior of the electron jumping of α-terthiophene under effect of electrical field has been investigated by means of SPSand EFISPS. Combining the result of UV-Vis spectra, the band band transition response peak(HOMO-LUMO) has been assigned and non-band-band transition response peaks have also been assigned according to the conception of polaron. For the SPSand EFISPSof α-3T, near 380 nm, it is band band transition absorption. Near 447, 465 and 600 nm, three different types of electron transitions which are related to energy levels of mono polaron occured. Near 770 and 900 nm, other two types of electron transition which related to bipolaron occured.

Key words: α-T Terthiophene(α-3T), Polaron, Surface photovoltage spectroscopy(SPS), Electric-field-induced surface photovoltage spectroscopy(EFISPS)

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