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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
StatePublished - 2001

Bibliographical note

Funding Information:
ACKNOWLEDGEMENT: This research was supported by the Korea Science and Engineering Foundation through the CRM of Korea University. K-K. Kim and D.-W. Lee acknowledge the support by the BK21 program of the Ministry of Education, Korea.

Keywords

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

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