Nanoscale luminescence and optical waveguiding characteristics of organic CN-TFMBE nanowires and hybrid coaxial nanowires
- Authors
- Han, Yoon Deok; Kim, Jong H.; Lee, Jin Woo; Lee, Hyunsoo; Kim, Ji Hyun; Kim, Jeongyong; Park, Soo Young; Joo, Jinsoo
- Issue Date
- 8월-2012
- Publisher
- ELSEVIER SCIENCE SA
- Keywords
- Photoluminescence; Optical waveguide; Nanocharacterization; 1-Cyano-trans-1,2-bis-(3 ' ,5 ' -bis-trifluoromethyl-biphenyl)ethylene; Poly(3-hexylthiophene); Charge transfer
- Citation
- SYNTHETIC METALS, v.162, no.13-14, pp.1299 - 1302
- Indexed
- SCIE
SCOPUS
- Journal Title
- SYNTHETIC METALS
- Volume
- 162
- Number
- 13-14
- Start Page
- 1299
- End Page
- 1302
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/107819
- DOI
- 10.1016/j.synthmet.2012.05.020
- ISSN
- 0379-6779
- Abstract
- The photoluminescence (PL) and optical waveguiding characteristics of 1-cyano-trans-1,2-bis-(3',5'-bis-trifluoromethyl-biphenyl)ethylene (CN-TFMBE) nanowires (NWs) and their hybrid coaxial NWs with p-type poly(3-hexylthiophene) (P3HT) were investigated. For nanoscale PL and optical waveguiding experiments, we used a laser confocal microscope (LCM) with a high spatial resolution. The LCM PL peak of the CN-TFMBE single NW was observed at 490 nm, indicating green-blue light emission. The LCM PL intensity of the CN-TFMBE NW as a core was considerably reduced through the hybridization with the P3HT shell, this was directly confirmed by the color CCD and LCM PL mapping images. For the CN-TFMBE single NWs, the decay constant of the optical waveguided PL intensity was estimated to be about 0.21 mu m-1, which is better than that of the conventional organic NWs and the CN-TFMBE/P3HT coaxial NWs. We can conclude through our analysis that the outer shell P3HT materials play the role of a luminescence quencher for the core CN-TFMBE NW due to a charge transfer effect. (c) 2012 Elsevier B.V. All rights reserved.
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