Vol. 21 No. 4 (2011)
Papers

Investigation of Energy Transfer in a Blend of electroluminescent Conducting Polymers

Published 30-12-2011

Keywords

  • Blend of polymers,
  • Photoluminescence (PL),
  • Organic light emitting (OLED),
  • Current-voltage characteristic (I-V)

How to Cite

Dinh, N. N., Nam, N. P. H., & Chung, D. N. (2011). Investigation of Energy Transfer in a Blend of electroluminescent Conducting Polymers. Communications in Physics, 21(4), 373. https://doi.org/10.15625/0868-3166/21/4/355

Abstract

With the aim of improving the photonic efficiency of an organic light emitting diode a blend of electroluminescent polymers, poly[9-vinylcarbarzole] (PVK) and poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV) was prepared. The energy transfer in the blend was investigated through the comparison of absorption, photoluminescence (PL) and current-voltage (I-V) characteristics of the blend and standard polymers. The obtained results showed that energy transfer from PVK to MEH-PPV enable to form localized excited-state complexes (e.g. exciplexes) in MEH-PPV. The PL intensity of the blended polymers was enhanced as the relative content of MEH-PPV was increased, and particularly, the highest improved PL was observed for an weight fraction of 15 wt{\%} of MEH-PPV in PVK. Organic light emitting diodes made from these blends would exhibit a large photonic efficiency.

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