Página 1 dos resultados de 253 itens digitais encontrados em 0.005 segundos
Resultados filtrados por Publicador: Associação Brasileira de Polímeros; Porto de Galinhas

Reducing the electrical resistance of films of poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate).

Yoshida, Satoru; Ito, Renato Hamakawa; Blackaby, Stuart Tyler; Noguchi, Henrique Kenji Formaggio; Takimoto, Herick Garcia; Santos, Emerson Roberto; Hui, Wang Shu
Fonte: Associação Brasileira de Polímeros; Porto de Galinhas Publicador: Associação Brasileira de Polímeros; Porto de Galinhas
Tipo: Conferência ou Objeto de Conferência
ENG
Relevância na Pesquisa
36.37%
Semi-conductive polymer thin films were prepared from solutions of poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT/PSS) by spin coating. A commercial solution of PEDOT/PSS was submitted to different modification by addition of organic polar compounds, namely ethylene glycol, dimethylformamide, N-methy-2-pyrrolidone, triethylamine, dimethylsulfoxide and sorbitol, and of solutions of nanosilver precursor at different concentrations. Films were prepared from the solutions by spin-coating and their electrical resistances and optical transmittances were measured. Alternatively, deposited thin films were submitted to additional chemical treatments and then heat cured. Additional chemical treatment of the films was carried out using solutions of methanesulfonic acid and p-toluenesulfonic acid at various concentrations. The electrical resistances of the films were reduced from 5-60 MΩ, for those films prepared from original PEDOT/PSS solution, to 10-50 kΩ and 110 kΩ for those from PEDOT/PSS solution modified with organic polar compounds and nanosilver precursor, respectively, and, finally, to 60 kΩ for those films treated with a solution of toluenesulfonic acid. The films presented excellent optical transparency and transmittances at 550 nm in the range 84 - 92 % were found by UV-Vis spectroscopy.; CAPES; CNPq