Title: Bias-tuned reduction of self-absorption in polymer blend electroluminescence
Authors : Ruhstaller, Beat
Scott, J.C.
Brock, P.J.
Scherf, Ullrich
Carter, S.A.
Published in : Chemical Physics Letters
Volume(Issue) : 317
Issue : 3–5
Pages : 238
Pages to: 244
Publisher / Ed. Institution : Elsevier
Issue Date: 4-Feb-2000
License (according to publishing contract) : Licence according to publishing contract
Type of review: Peer review (Publication)
Language : English
Subject (DDC) : 530: Physics
Abstract: We present a concentration- and bias-dependent electroluminescence study on MEH-PPV aggregation in a binary polymer blend with the blue-emitting Me-LPPP as host. In low-concentration blends the spectral features of MEH-PPV peak at 560 nm, identical to its photoluminescence spectrum in dilute solution, and therefore suggesting effective hindering of aggregation-induced self-absorption. At higher concentrations the electroluminescence spectra are dominated by MEH-PPV peaking at 600 nm and a dramatic shift of spectral weight to the 560 nm peak is observed with increasing bias. We attribute this novel effect to a reduction of self-absorption caused by either photo- or charge-induced bleaching.
Departement: School of Engineering
Organisational Unit: Institute of Computational Physics (ICP)
Publication type: Article in scientific Journal
DOI : 10.1016/S0009-2614(99)01390-1
ISSN: 0009-2614
URI: https://digitalcollection.zhaw.ch/handle/11475/6956
Appears in Collections:Publikationen School of Engineering

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