Microfabrication of electroluminescent polymer for devices construction

Autor(es)

Estevam-Alves, R. ^[1] ; Ferreira, P. H. D. ^[1] ; Almeida, G. F. B. ^[1] ; Sousa, W. S. ^[1] ; Mendonca, C. R. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Inst Fis Sao Carlos, BR-13560970 Sao Carlos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Applied Surface Science; v. 314, p. 633-637, SEP 30 2014.
• Citações Web of Science: 5

Resumo

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 film was obtained by atomic force microscopy (AFM). It has been found that the surface roughness of the investigated films 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. (C) 2014 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 11/12399-0 - Aplicações de pulsos de femtossegundos em óptica não linear: espectroscopia, formatação de pulsos e microfabricação
• Beneficiário: Cleber Renato Mendonça
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 12/04794-9 - Micro-estruturação com lasers de femtossegundos em vidros: fabricação de guias de ondas e produção de nanopartículas.
• Beneficiário: Paulo Henrique Dias Ferreira
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado