Effect of Hydrostatic Pressure on the Absorption Spectrum of Poly(3-alkylthiophene) Solution
- 1 February 1989
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 28 (2A) , L323-324
- https://doi.org/10.1143/jjap.28.l323
Abstract
The absorption edge of poly(3-hexylthiophene) in toluene demonstrates a remarkable red shift upon application of high hydrostatic pressure. A band gap as small as 1.7 eV has been evaluated in this solution under hydrostatic pressure. This is much smaller even than that of a nonsubstituted polythiophene film (2.0 eV) and is explained by the increased co-planarity due to the decreased torsion angle between neighboring thiophene rings.Keywords
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