Proton-irradiation effect on the luminescence of the MEH-PPV conjugated polymer

Kyu Won Lee, Kyu Hyun Mo, Jae Won Jang, Cheol Eui Lee

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

We report proton-irradiation effect on luminescence in the MEH-PPV conjugated polymer. While the luminescence was severely weakened by the low-energy irradiation with a high dosage, it was affected only weakly by the high-energy irradiation with a low dosage. The electroluminescence was affected by the irradiation more severely than the photoluminescence was, preserving the external quantum efficiency. While the luminescence spectrum of the severely damaged polymer was broadened with a blue-shift, a weak damage resulted only in a decrease in the luminescence intensity apparently preserving the spectral shape. The change in the luminescence spectra may be explained by chain conformational disorders as well as chain scission induced by the irradiation.

Original languageEnglish
Pages (from-to)57-60
Number of pages4
JournalSolid State Communications
Volume141
Issue number2
DOIs
Publication statusPublished - 2007 Jan

Bibliographical note

Funding Information:
This work was supported by the Korea Science and Engineering Foundation (User Programme of Proton Engineering Frontier Project as a part of the 21C Frontier R&D Program and RO1-2005-000-10798-0) and by the Korea Research Foundation (Grant No. KRF-2004-005-C00060 and the Second Brain Korea 21 Project). This work was also supported by the Seoul Research and Business Development Program (Grant No. 10583). We thank Dr. H.-J. Woo at the Korea Institute of Geoscience and Mineral Resources (KIGAM) for the proton-beam irradiation. The measurements at the Korean Basic Science Institute (KBSI) and the Centre for Elecro- and Photo-Responsive Molecules (CRM) are acknowledged.

Keywords

  • A. Polymers, elastomers and plastics
  • E. Luminescence

ASJC Scopus subject areas

  • General Chemistry
  • Condensed Matter Physics
  • Materials Chemistry

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