Energy transfer effect of hybrid organic rubrene nanorod with CdSe/ZnS quantum dots: Application to optical waveguiding modulators

Woo Sung Moon, Eun Hei Cho, Ju Bok Lee, Sumin Jeon, Jeongyong Kim, Kwang Sup Lee, Jinsoo Joo

Research output: Contribution to journalArticle

Abstract

Organic rubrene (5,6,11,12-tetraphenyltetracene) nanorods (NRs) were fabricated through the physical vapor transport method for the study of active fluorescence optical waveguiding and its modulation. The functionalized CdSe/ZnS quantum dots (QDs) with blue and green emissions were partially attached to the surface of the rubrene NR. Using a high resolution laser confocal microscope (LCM), the nanoscale photoluminescence (PL) intensity of the pristine rubrene portion of the hybrid NR/QDs was observed to be considerably enhanced after it was attached with blue (or green) QDs. The nanoscale optical waveguiding characteristics of the hybrid NR/QDs were investigated in terms of the output LCM PL spectra as a function of propagation distance. We observed more efficient optical waveguiding characteristics from the hybrid rubrene NR/blue-QDs than from the pristine NR and the hybrid rubrene NR/green-QDs. These results can be analyzed in terms of the higher Förster resonance energy transfer efficiency for hybrid rubrene NR/blue-QDs system. The results and analysis were supported by a drastic decrease of exciton lifetime of QDs in the hybrid region as measured by time-resolved PL decay curves.

Original languageEnglish
Pages (from-to)285-292
Number of pages8
JournalSynthetic Metals
Volume198
DOIs
Publication statusPublished - 2014 Jan 1

Fingerprint

Light modulators
Nanorods
Energy transfer
nanorods
Semiconductor quantum dots
modulators
energy transfer
quantum dots
Photoluminescence
photoluminescence
Microscopes
microscopes
rubrene
Lasers
laser outputs
Excitons
Fluorescence
Vapors
excitons
Modulation

ASJC Scopus subject areas

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

Cite this

Energy transfer effect of hybrid organic rubrene nanorod with CdSe/ZnS quantum dots : Application to optical waveguiding modulators. / Moon, Woo Sung; Cho, Eun Hei; Lee, Ju Bok; Jeon, Sumin; Kim, Jeongyong; Lee, Kwang Sup; Joo, Jinsoo.

In: Synthetic Metals, Vol. 198, 01.01.2014, p. 285-292.

Research output: Contribution to journalArticle

Moon, Woo Sung ; Cho, Eun Hei ; Lee, Ju Bok ; Jeon, Sumin ; Kim, Jeongyong ; Lee, Kwang Sup ; Joo, Jinsoo. / Energy transfer effect of hybrid organic rubrene nanorod with CdSe/ZnS quantum dots : Application to optical waveguiding modulators. In: Synthetic Metals. 2014 ; Vol. 198. pp. 285-292.
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