Electroluminescence of (styrene-co-acrylic acid) ionomer/conjugated MEH-PPV blends
In: Synthetic metals, Jg. 158 (2008), Heft 6, S. 219-225
academicJournal
- print, 39 ref
Zugriff:
This work reports the electroluminescence of poly[2-methoxy-5(2'-ethylhexyloxy)-p-phenylenevinylene] (MEH-PPV) and poly(styrene-co-acrylic acid-co-1-pyrenylmethyl methacrylate) (SAA) blends in ratios from 0 to 100 wt.% in mass of MEH-PPV. The styrene-co-acrylic copolymer was synthesized with 3 mol% of acrylic acid units to simultaneously enhance blend miscibility and charge transport in MEH-PPV. The morphology was studied using epifluorescence microscopy and scanning electron microscopy in which the pyrenyl-labeled copolymer is used to enhance microscopic contrast. Device performances were compared: those using MEH-PPV have a turn-on voltage of 3.5 V, luminance of 500 cd/m2 and current density of 430 mA/cm2 at 5 V, while MEH-PPV blended with 50 wt.% styrene-acrylic copolymer showed a turn-on voltage of 2.5 V, a luminance of 2300 cd/A and a current density of 640 mA/cm2 at 5 V.
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Electroluminescence of (styrene-co-acrylic acid) ionomer/conjugated MEH-PPV blends
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Autor/in / Beteiligte Person: | COSSIELLO, Rafael F ; CIRPAN, Ali ; KARASZ, Frank E ; AKCELRUD, Leni ; ATVARS, Teresa D. Z |
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Zeitschrift: | Synthetic metals, Jg. 158 (2008), Heft 6, S. 219-225 |
Veröffentlichung: | Amsterdam; Lausanne; New York, NY: Elsevier Science, 2008 |
Medientyp: | academicJournal |
Umfang: | print, 39 ref |
ISSN: | 0379-6779 (print) |
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