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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 21 — Oct. 17, 2007
  • pp: 13832–13837

Giant enhancement of band edge emission based on ZnO/TiO2 nanocomposites

H. Y. Lin, Y. Y. Chou, C. L. Cheng, and Y. F. Chen  »View Author Affiliations


Optics Express, Vol. 15, Issue 21, pp. 13832-13837 (2007)
http://dx.doi.org/10.1364/OE.15.013832


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Abstract

Enhancement of band edge emission of ZnO nanorods up to a factor of 120 times has been observed in the composite consisting of ZnO nanorods and TiO2 nanoparticles, while the defect emission of ZnO nanorods is quenched to noise level. Through a detailed investigation, it is found that the large enhancement mainly arises from fluorescence resonance energy transfer between the band edge transition of ZnO nanorods and TiO2 nanoparticles. Our finding opens up new possibilities for the creation of highly efficient solid state emitters.

© 2007 Optical Society of America

OCIS Codes
(250.5230) Optoelectronics : Photoluminescence
(260.5740) Physical optics : Resonance
(240.6675) Optics at surfaces : Surface photoemission and photoelectron spectroscopy

ToC Category:
Optics at Surfaces

History
Original Manuscript: August 21, 2007
Revised Manuscript: September 6, 2007
Manuscript Accepted: September 10, 2007
Published: October 5, 2007

Citation
H. Y. Lin, Y. Y. Chou, C. L. Cheng, and Y. F. Chen, "Giant enhancement of band edge emission based on ZnO/TiO2 nanocomposites," Opt. Express 15, 13832-13837 (2007)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-15-21-13832


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