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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 6 — Mar. 16, 2009
  • pp: 4342–4347

Selectively enhanced band gap emission in ZnO/Ag2O nanocomposites

Tzung-Hsuan Lin, Tung-Te Chen, Chung-Liang Cheng, Hsia-Yu Lin, and Yang-Fang Chen  »View Author Affiliations

Optics Express, Vol. 17, Issue 6, pp. 4342-4347 (2009)

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A new composite consisting of ZnO nanorods decorated with Ag2O nanoparticles has been synthesized and characterized. It is found that the band gap emission of ZnO nanorods can be greatly enhanced by about 10 times, while the defect emission can be suppressed to the detection limit, simultaneously. The ratio between the band gap and defect emission reaches to an enhanced factor of about 600 times. The underlying mechanism is attributed to the combined effects of surface modification, band alignment, as well as charge transfer. Our approach provided here can be extended to many other semiconductors for creating nanocomposites with novel optical properties.

© 2009 Optical Society of America

OCIS Codes
(160.6000) Materials : Semiconductor materials
(250.5230) Optoelectronics : Photoluminescence
(160.4236) Materials : Nanomaterials

ToC Category:

Original Manuscript: February 3, 2009
Revised Manuscript: February 26, 2009
Manuscript Accepted: February 27, 2009
Published: March 3, 2009

Tzung-Hsuan Lin, Tung-Te Chen, Chung-Liang Cheng, Hsia-Yu Lin, and Yang-Fang Chen, "Selectively enhanced band gap emission in ZnO/Ag2O nanocomposites," Opt. Express 17, 4342-4347 (2009)

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