Highly efficient polymer blends from a polyfluorene derivative and PVK for LEDs

Date

2009-11-27

Author

NOWACKI, Bruno
IAMAZAKI, Eduardo
Çırpan, Ali
KARASZ, Frank
ATVARS, Teresa D.Z.
AKCELRUD, Leni

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The photophysical and electroluminescent properties of blends of a polyfluorene derivative of the PPV type, poly[(9,9-dihexyl-9H-fluorene-2,7-diyl)-1,2-ethenediyl-1,4-phenylene-1,2-ethenediyl] (labeled as LaPPS16) and poly(vinylcarbazole) - PVK are presented and discussed in terms of the operating light emission mechanisms. Static and dynamic fluorescence measurements and morphology data showed a powerful exciton migration from the host (PVK) to the guest (LaPPS16) resulting in emission coming from solely LaPPS16, even when in concentrations small as 1%. Electroluminescence was greatly enhanced with the blending; increases of 18 times in efficiency and 20 times in luminance were achieved in the blend containing 20% LaPPS16, with 3 V applied voltage.

Subject Keywords

Organic Chemistry, Polymers and Plastics

URI

https://hdl.handle.net/11511/37211

Journal

Polymer

DOI

https://doi.org/10.1016/j.polymer.2009.09.056

Collections

Department of Chemistry, Article

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Citation Formats

B. NOWACKI, E. IAMAZAKI, A. Çırpan, F. KARASZ, T. D. Z. ATVARS, and L. AKCELRUD, “Highly efficient polymer blends from a polyfluorene derivative and PVK for LEDs,” Polymer, pp. 6057–6064, 2009, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/37211.