Abstract
Photocurrent and differential capacity measurements have been carried out at polybithienyl (PBT) and poly(3-butylthiophene) (PBuT) films on platinum. The photocurrents are cathodic, similar to inorganic p-type semiconductors. The band gap energy was determined from the photocurrent spectra (E g=1.7 eV for PBT and E g=1.9 eV for PBuT). The dependence of the differential capacity on the potential could be presented as Mott-Schottky plot, at least in a limited potential region. The flatband potential was determined (E fb= 0.67 V for PBT and E fb=0.58 V for PBuT).
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Received: 9 June 1998 / Accepted: 22 August 1998
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Zhang, W., Schmidt-Zhang, P., Kossmehl, G. et al. Photocurrent and differential capacity measurements at polybithienyl and poly(3-butylthiophene) films. J Solid State Electrochem 3, 135–140 (1999). https://doi.org/10.1007/s100080050139
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DOI: https://doi.org/10.1007/s100080050139