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Hybrid effect of doped and de-doped poly(3-methylthiophene) nanowires with CdSe/ZnS quantum dots: Nanoscale luminescence variation
- Authors
- Lee, Sunmi; Lee, Youg-baek; Park, Sung-yeoun; Lee, Hyunsoo; Kim, Jeongyong; Lee, Kwang-Sup; Joo, Jinsoo
- Issue Date
- 15-1월-2013
- Publisher
- ELSEVIER SCIENCE SA
- Keywords
- Poly(3-methylthiophene); Nanowire; CdSe/ZnS quantum dot; Energy transfer; Photoluminescence
- Citation
- SYNTHETIC METALS, v.164, pp.22 - 26
- Indexed
- SCIE
SCOPUS
- Journal Title
- SYNTHETIC METALS
- Volume
- 164
- Start Page
- 22
- End Page
- 26
- ISSN
- 0379-6779
- 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. (C) 2012 Elsevier B.V. All rights reserved.
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