Abstract
Thermochromic effects in Langmuir-Blodgett (LB) films of poly(3-alkylthiophenes) mixed with arachidic acid have been studied above room temperature. The temperature-dependent optical absorption, conductivity and time constants associated with them were investigated. The absorption maximum of undoped films shifted to larger energies with increasing temperature. In complementary measurements of spin-coated thin films the shift was observed to occur at a higher temperature than in the LB films. The changes in the optical absorption and the conductivity were only partly reversible and, in addition, time-dependent. The thermal dedoping of doped LB films was also studied.
| Original language | English |
|---|---|
| Pages (from-to) | 3830 - 3835 |
| Number of pages | 6 |
| Journal | Synthetic Metals |
| Volume | 57 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 1993 |
| MoE publication type | A1 Journal article-refereed |
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Ahlskog, M., Paloheimo, J., Punkka, E., & Stubb, H. (1993). Thermochromism in Langmuir-Blodgett films of polyalkylthiophenes. Synthetic Metals, 57(1), 3830 - 3835. https://doi.org/10.1016/0379-6779(93)90521-W