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Browse Journals & Magazines > Applied Physics Letters ...> Volume:96 Issue:3 Help

Interchain and intrachain emission branching in polymer light-emitting diode doped by organic molecules

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6 Author(s)
Krautz, D. ; ICFO-Institut de Ciencies Fotoniques, Mediterranean Technology Park, 08860 Castelldefels (Barcelona), Spain ; Lunedei, E. ; Puigdollers, J. ; Badenes, G.
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Your organization might have access to this article on the publisher's site. To check, click on this link:http://dx.doi.org/+10.1063/1.3276271 

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. A decreased 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.

Published in:
Applied Physics Letters  (Volume:96 ,  Issue: 3 )

Date of Publication: Jan 2010

Page(s):
033301 - 033301-3
ISSN :
0003-6951
Digital Object Identifier :
10.1063/1.3276271
Product Type:
Journals & Magazines
Date of Current Version :
26 January 2010
Issue Date :
Jan 2010

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