Hybrid effect of doped and de-doped poly(3-methylthiophene) nanowires with CdSe/ZnS quantum dots: Nanoscale luminescence variation

Sunmi Lee, Youg Baek Lee, Sung Yeoun Park, Hyunsoo Lee, Jeongyong Kim, Kwang Sup Lee, Jinsoo Joo

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Doped and de-doped poly(3-methylthiophene) (P3MT) nanowires (NWs) were synthesized through electrochemical polymerization and functionalized CdSe/ZnS quantum dots (QDs) with blue and green emissions were homogeneously attached to the NW surfaces. The photoluminescence (PL) spectra of the QDs/P3MT single NWs indicated a drastic enhancement of PL intensity for both doped and de-doped NWs owing to the energy transfer effect from QDs to NWs. The QDs/de-doped P3MT NWs exhibited higher energy transfer efficiency because of a reduced screening effect for energy transfer, which was confirmed by a decrease in the exciton lifetime of the QDs, determined from time-resolved PL decay curves.

Original languageEnglish
Pages (from-to)22-26
Number of pages5
JournalSynthetic Metals
Volume164
Issue number1
DOIs
Publication statusPublished - 2013

Keywords

  • CdSe/ZnS quantum dot
  • Energy transfer
  • Nanowire
  • Photoluminescence
  • Poly(3-methylthiophene)

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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