Interchain and intrachain emission branching in polymer light-emitting diode doped by organic molecules
Tipus de documentArticle
Condicions d'accésAccés obert
A blend of the polymer poly 2- 2-ethylhexyloxy -5-methoxy-1,4-phenylenevinylene MEH-PPV and the electron-transport molecule tris- 8-hydroxyquinoline aluminum Alq3 has been investigated by means of electroluminescence and fluorescence spectroscopy, upon variation of the Alq3 content in the blend.Adecreased interchain emission is observed upon increasing Alq3 content, due to lower packing of the MEH-PPV chains which leads to a reduction in the interchain interaction, excimer formation, and emission probability. A branching of MEH-PPV interchain and intrachain emissive contributions is clearly time resolved and analyzed as a function of the Alq3 content. At high doping concentration, direct emission from Alq3 molecules is observed.
CitacióKrautz, D. [et al.]. Interchain and intrachain emission branching in polymer light-emitting diode doped by organic molecules. "Applied physics letters", 18 Gener 2010, vol. 96, núm. 3, p. 1-3.