Observation of persistent photoconductivity in conducting polyaniline thin films |
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| Authors: | D.M. Bubb S.M. O’Malley C. Antonacci R. Belmont R.A. McGill C. Crimi |
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| Affiliation: | (1) Department of Physics, Seton Hall University, 400 S. Orange Ave., South Orange, NJ 07079, USA;(2) Naval Research Laboratory, Code 6375, Washington, DC 20375, USA;(3) Department of Chemistry and Biochemistry, Seton Hall University, 400 S. Orange Ave., South Orange, NJ 07079, USA;(4) Department of Biology, Seton Hall University, 400 S. Orange Ave., South Orange, NJ 07079, USA |
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| Abstract: | Conducting polyaniline thin films have been deposited by a laser-based vaporization technique. The films have been characterized by infrared spectroscopy, UV-Vis spectroscopy, four-point conductivity measurements, thermogravimetric analysis, and fluorescence measurements. In addition, the films have been characterized with respect to their photoconductive response to 532-nm laser light. It is found that the films exhibit persistent photoconductivity and it is proposed that defect base sequences may be responsible for the charge localization that results in such a photoconductive response. PACS 78.66.Qn; 81.15.Fg; 72.80.Le |
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