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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 6 — Mar. 20, 2006
  • pp: 2372–2379

Enhancement of band gap emission stimulated by defect loss

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

Optics Express, Vol. 14, Issue 6, pp. 2372-2379 (2006)

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Defect radiation has been always considered as the most important loss for an emitter based on band gap emission. Here, we propose a novel approach which goes against this conventional wisdom. Based on the resonance effect between the surface plasmon of metal nanoparticles and defect emission, it is possible to convert the useless defect radiation to the useful excitonic emission with a giant enhancement factor. Through the transfer of the energetic electrons excited by surface plasmon from metal nanoparticles to the conduction band of the emitter, the band gap emission can be greatly enhanced, while the defect emission can be suppressed to noise level.

© 2006 Optical Society of America

OCIS Codes
(240.6490) Optics at surfaces : Spectroscopy, surface
(240.6680) Optics at surfaces : Surface plasmons
(260.2510) Physical optics : Fluorescence

ToC Category:
Optics at Surfaces

Original Manuscript: January 27, 2006
Manuscript Accepted: March 1, 2006
Published: March 20, 2006

H. Y. Lin, C. L. Cheng, Y. Y. Chou, L. L. Huang, Y. F. Chen, and K. T. Tsen, "Enhancement of band gap emission stimulated by defect loss," Opt. Express 14, 2372-2379 (2006)

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