Electroluminescence of (styrene-co-acrylic acid) ionomer/conjugated MEH-PPV blends

Date

2008-04-01

Author

COSSIELLO, Rafael F.
Çırpan, Ali
KARASZ, Frank E.
AKCELRUD, Leni
Atvars, Teresa D.Z.

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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.

Subject Keywords

Mechanical Engineering, Materials Chemistry, Mechanics of Materials, Electronic, Optical and Magnetic Materials, Condensed Matter Physics, Metals and Alloys

URI

https://hdl.handle.net/11511/38294

Journal

Synthetic Metals

DOI

https://doi.org/10.1016/j.synthmet.2008.01.011

Collections

Department of Chemistry, Article

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Citation Formats

R. F. COSSIELLO, A. Çırpan, F. E. KARASZ, L. AKCELRUD, and T. D. Z. Atvars, “Electroluminescence of (styrene-co-acrylic acid) ionomer/conjugated MEH-PPV blends,” Synthetic Metals, pp. 219–225, 2008, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/38294.