Effects of laser wavelength, fluence, and pulse duration on infrared pulsed laser deposition of a conducting polymer

S. L. Johnson; K. Appavoo; H. K. Park; R. F. Haglund

doi:10.1117/12.764035

7 March 2008 Effects of laser wavelength, fluence, and pulse duration on infrared pulsed laser deposition of a conducting polymer

S. L. Johnson; K. Appavoo; H. K. Park; R. F. Haglund

Author Affiliations +

Proceedings Volume 6879, Photon Processing in Microelectronics and Photonics VII; 68790Y (2008) https://doi.org/10.1117/12.764035
Event: Lasers and Applications in Science and Engineering, 2008, San Jose, California, United States

Abstract

Thin films of a conducting polymer have been grown by resonant infrared matrix-assisted pulsed-laser evaporation (RIR-MAPLE). Properties of the thin films such as surface morphology and electrical conductivity have been investigated as a function of laser wavelength, fluence, and pulse structure. Using a free-electron laser whose wavelength is continuously tunable throughout the mid-infrared region (2-10 μm), we are able to deposit polymer films from various liquid matrices by resonantly exciting selective vibrational modes of the solvent. An Er:YAG laser operating at 2.94 μm is used to study the effects of different laser pulse durations. In the case of poly(3,4 ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS), it is found that only specific excitation wavelengths and pulse durations lead to the deposition of smooth and functional polymer films.

Citation Download Citation

S. L. Johnson, S. L. Johnson, K. Appavoo, K. Appavoo, H. K. Park, H. K. Park, R. F. Haglund, R. F. Haglund, } "Effects of laser wavelength, fluence, and pulse duration on infrared pulsed laser deposition of a conducting polymer", Proc. SPIE 6879, Photon Processing in Microelectronics and Photonics VII, 68790Y (7 March 2008); doi: 10.1117/12.764035; https://doi.org/10.1117/12.764035

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