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Solubility and Charge Transport in Blends of Poly‐dialkoxy‐ p ‐phenylene Vinylene and UV‐Cross‐Linkable Matrices
Author(s) -
Kasparek C.,
Rohloff R.,
Michels J. J.,
Crăciun N. I.,
Wildeman J.,
Blom P. W. M.
Publication year - 2017
Publication title -
advanced electronic materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.25
H-Index - 56
ISSN - 2199-160X
DOI - 10.1002/aelm.201600519
Subject(s) - materials science , solubility , photocurrent , electron mobility , polymer , layer (electronics) , phenylene , polymer blend , matrix (chemical analysis) , chemical engineering , electroluminescence , polymer chemistry , copolymer , optoelectronics , organic chemistry , composite material , chemistry , engineering
Poly[2‐methoxy‐5‐(2‐ethylhexyloxy)‐1,4‐phenylenevinylene] (MEH‐PPV) is blended with two different inert UV‐cross‐linkable matrices to tune the solubility of the solution‐processed films. It is found that only 10 wt% of theses matrices is required to make the blend layer insoluble after cross‐linking. The addition of only 10 wt% matrix only slightly reduces the hole mobility, whereas the electron transport is not affected. Polymer light‐emitting diodes (PLEDs) with an insoluble 90:10 MEH‐PPV: matrix blend layer exhibit the same current density and photocurrent as pristine MEH‐PPV PLEDs.