| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5358410 | Applied Surface Science | 2014 | 5 Pages |
Abstract
We report on the femtosecond-laser micromachining of poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV) films. We study the influence of pulse energy and scanning speed on the microstructures produced on sample surface. The microstructures were analyzed using an optical microscope and the morphology of the polymer ï¬lm was obtained by atomic force microscopy (AFM). It has been found that the surface roughness of the investigated ï¬lms is significantly increased upon increasing energy pulses and velocity. Furthermore, we report a limit for ablation threshold on the produced line microstructures and its influence on the absorption spectrum. In the end, we investigated the conditions for produce a luminescent mechanism and succeed in fabricating a microstructured MEH-PPV device.
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Authors
R. Estevam-Alves, P.H.D. Ferreira, G.F.B. Almeida, W.S. Sousa, C.R. Mendonça,