Two-photon absorption of electroluminescent conducting polymers

Geon Joon Lee, Mi Kyung Na, Seung Joon Jeon, Kyung Kon Kim, Dong Won Lee, Young Rae Hong, Jung Il Jin

Research output: Contribution to journalArticlepeer-review

Abstract

We have investigated two-photon absorption(2PA) characteristics of highly efficient electroluminescent polymers, poly(phenylenevinylene) derivatives with an alkoxy and carbazole or oxadiazole groups as pendants: OxdEh-PPV and CzEh-PPV. We measured two-photon excitation spectra and compared them with one-photon excitation spectra. We found that two- and one-photon transitions satisfy different selection rules. The 2PA coefficients were obtained by measuring the photoluminescence spectra after two- and one-photon absorption. At 840nm, 2PA coefficients of OxdEh-PPV and CzEh-PPV are measured to be 1.0×10-49cm4·s and 4.4×10-49cm4·s, respectively.

Original languageEnglish
Pages (from-to)257-260
Number of pages4
JournalMolecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals
Volume371
DOIs
Publication statusPublished - 2001

Keywords

  • Carbazole
  • Oxadiazole
  • PPV derivatives
  • Photoluminescence
  • Photoluminescence excitation
  • Two-photon absorption

ASJC Scopus subject areas

  • Condensed Matter Physics

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