Optical Absorption in Polyacetylene: A Direct Measurement Using Photothermal Deflection Spectroscopy
- 2 July 1984
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 53 (1), 86-89
- https://doi.org/10.1103/physrevlett.53.86
Abstract
We present direct measurements of the optical absorption in undoped and ammoniatreated polyacetylene utilizing the technique of photothermal deflection spectroscopy. Our spectra show an Urbach-type edge and a broad, N-sensitive sub-band-gap absorption. Quantitative comparisons of absorption and spin-resonance results do not show the predicted midgap absorption from neutral solitons.
Keywords
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