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 |
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| Pages (from-to) | 3830-3835 |
| Journal | Synthetic Metals |
| Volume | 57 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 1993 |
| MoE publication type | A1 Journal article-refereed |