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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics


  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 8, Iss. 6 — Jun. 27, 2013

Modulated exciton-plasmon interactions in Au-SiO2-CdTe composite nanoparticles

Lijuan Tang, Jinyou Xu, Pengfei Guo, Xiujuan Zhuang, Yong Tian, Yicheng Wang, Huigao Duan, and Anlian Pan  »View Author Affiliations

Optics Express, Vol. 21, Issue 9, pp. 11095-11100 (2013)

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Well-defined Au-SiO2-CdTe composite nanoparticles were synthesized via a multistep chemical approach in water solution to gain insight into the interaction between metal and semiconductor nanostructures. Photoluminescence measurement reveals that the fluorescence of CdTe quantum dots (QDs) in this composite with optimized SiO2 thickness (4 nm) has over ten times enhancement compared with that of bare CdTe QDs. The considerable fluorescence enhancement of CdTe QDs is attributed to the surface plasmon resonance, which is further confirmed by the lifetime measurement. The enhanced fluorescence can be used to improve the performance of CdTe QDs as fluorescence probe and may find potential applications in biolabeling.

© 2013 OSA

OCIS Codes
(130.5990) Integrated optics : Semiconductors
(240.6680) Optics at surfaces : Surface plasmons
(250.5230) Optoelectronics : Photoluminescence
(350.5400) Other areas of optics : Plasmas
(160.4236) Materials : Nanomaterials
(250.5403) Optoelectronics : Plasmonics

ToC Category:
Optics at Surfaces

Original Manuscript: January 15, 2013
Revised Manuscript: April 22, 2013
Manuscript Accepted: April 23, 2013
Published: April 29, 2013

Virtual Issues
Vol. 8, Iss. 6 Virtual Journal for Biomedical Optics

Lijuan Tang, Jinyou Xu, Pengfei Guo, Xiujuan Zhuang, Yong Tian, Yicheng Wang, Huigao Duan, and Anlian Pan, "Modulated exciton-plasmon interactions in Au-SiO2-CdTe composite nanoparticles," Opt. Express 21, 11095-11100 (2013)

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