Electrochemical Tuning of Morphological and Optoelectronic Characteristics of Donor Acceptor Spiro Fluorene Polymer Film. Application in the Building of an Electroluminescent Device

DANIEL HEREDIA; LUCIANA FERNANDEZ; LUIS OTERO; MUSUBU ICHIKAWA; CHI-YEN LIN; YUAN-LI LIAO; SHAO-AN WANG; KEN-TSUNG WONG; FERNANDO FUNGO

JOURNAL OF PHYSICAL CHEMISTRY C

AMER CHEMICAL SOC

Año: 2011 vol. 115 p. 21907 - 21914

1932-7447

The electrochemical polymerization conditions for the synthesis of spirobifluorene-based polymer (EF-CN1) films with adequate properties to be applied in an organic light emitting diode (OLED) were studied.We demonstrate that, after optimization in the parameters of electrochemical polymerization, we were able to obtain a conducting polymeric filmwith very smooth surface, absence of pinholes, and high optoelectronic activity, which was compatible as an efficient hole transporting layer in OLED. The electrochemical deposited polymers, and polymer films obtained through drop casting fromsolution of chemically synthesized polymer (C-CN1), were characterized and the results compared. The films were studied by cyclic voltammetry, UV vis, fluorescence spectra, scanning electron mictroscopy, and atomic force microscopy. The built OLEDs achieve current-luminous efficiency and external quantum efficiency of 2.6 cd/A and 0.50%, respectively.