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Transient thermochromism during ArF excimer laser ablation of poly(3-dodecylthiophene) films

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4 Author(s)
Tsunoda, Katsunori ; Department of Applied Chemistry, Faculty of Science, Science University of Tokyo, Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan ; Kakinuma, Keiko ; Yajima, Hirofumi ; Ishii, Tadahiro

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The photothermal effects involved in ArF (193 nm) laser ablation of poly(3-dodecylthiophene) (PDT) films, which have the characteristics of fusibility and thermochromism, were studied using atomic force microscopy and transient absorption spectroscopy. A molten layer was observed in the irradiated region of the PDT films. The behavior of the transient absorption spectra corresponding to the thermochromism showed a rapid increase in temperature during laser duration. A heating rate of approximately 5×109deg/s was obtained. The obtained findings reveal that photothermal effects are significantly involved in the ablation process. © 1998 American Institute of Physics.

Published in:

Applied Physics Letters  (Volume:73 ,  Issue: 23 )

Date of Publication:

Dec 1998

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