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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Thermochromism in Langmuir-Blodgett films of polyalkylthiophenes. / Ahlskog, Markus; Paloheimo, Jari; Punkka, Eero; Stubb, Henrik.
In: Synthetic Metals, Vol. 57, No. 1, 1993, p. 3830 - 3835.Research output: Contribution to journal › Article › Scientific › peer-review
TY - JOUR
T1 - Thermochromism in Langmuir-Blodgett films of polyalkylthiophenes
AU - Ahlskog, Markus
AU - Paloheimo, Jari
AU - Punkka, Eero
AU - Stubb, Henrik
PY - 1993
Y1 - 1993
N2 - 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.
AB - 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.
U2 - 10.1016/0379-6779(93)90521-W
DO - 10.1016/0379-6779(93)90521-W
M3 - Article
VL - 57
SP - 3830
EP - 3835
JO - Synthetic Metals
JF - Synthetic Metals
SN - 0379-6779
IS - 1
ER -