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Anisotropic optical properties of pure and doped polyacetylene |
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| Authors: | CR Fincher DL Peebles AJ Heeger MA Druy Y Matsumura AG MacDiarmid H Shirakawa S Ikeda |
| Institution: | Department of Physics and Laboratory for Research on the Structure of Matter University of Pennsylvania, Philadelphia, PA 19104, USA;Department of Chemistry and Laboratory for Research on the Structure of Matter University of Pennyslvania, Philadelphia, PA 19104, USA;Research Laboratory of Resources Utilization Tokyo Institute of Technology, Yokohama, Japan |
| Abstract: | Optical absorption and reflection measurements have been carried out on pure and doped polyacetylene films. The absorption data are consistent with a model of (CH)X as a direct gap quasi-l d semiconductor; doping with AsF5 or iodine introduces absorption within the gap, but appears to leave the interband transition intact. The anisotropic reflectance from partially aligned films and the increased optical anisotropy upon doping provide evidence of quasi-l d behavior of the semiconducting pure polymer and the metallic doped polymer. |
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