OSA's Digital Library

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)
http://dx.doi.org/10.1364/OE.17.004342


View Full Text Article

Enhanced HTML    Acrobat PDF (339 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

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:
Optoelectronics

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

Citation
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)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-17-6-4342


Sort:  Author  |  Year  |  Journal  |  Reset  

References

  1. N. E. Hsu, W. K. Hung, and Y. F. Chen, "Origin of defect emission identified by polarized luminescence from aligned ZnO nanorods," J. Appl. Phys. 96, 4671-4673 (2004). [CrossRef]
  2. H. Y. Lin, C. L. Cheng, Y. Y. Chou, L. L. Huang, and Y. F. Chen, "Enhancement of band gap emission stimulated by defect loss," Opt. Express 14, 2372-2379 (2006). [CrossRef] [PubMed]
  3. F. Leiter, H. Alves, D. Pfisterer, N. G. Romanov, D. M. Hofmann, and B. K. Meyer, "Oxygen vacancies in ZnO," Physica B 340-342, 201-204 (2003). [CrossRef]
  4. X. M. Fan, J. S. Lian, Z. X. Guo,and H. J. Lu, "Microstructure and photoluminescence properties of ZnO thin films grown by PLD on Si(100) substrates," Appl. Surf. Science 239, 176-181 (2005). [CrossRef]
  5. K. Vanheusden, W. L. Warren, C. L. Seage, D. L. Tallent, J. A. Voigtang, and B. E. Gnade, "Mechanisms behind green photoluminescence in ZnO phosphor powders," J. Appl. Phys. 79, 7983-7990 (1996). [CrossRef]
  6. A. Van Dijken, E. A. Meulenkamp, D. Vanmaekelbergh, and A. Meilerink, "The luminescence of nanocrystalline ZnO particles: the mechanism of the ultraviolet and visible emission," J. Lumin. 87-89, 454-456 (2000). [CrossRef]
  7. J. M. Lin, H. Y. Lin, C. L. Cheng, and Y. F. Chen, "Giant enhancement of bandgap emission of ZnO nanorods by platinum nanoparticles," Nanotechnology 17, 4391-4394 (2006). [CrossRef]
  8. Y. Zhang, Z. Zhang, B. Lin, Z. Fu, and J. Xu, "Effects of Ag doping on the photoluminescence of ZnO films grown on Si substrates," J. Phys. Chem. 109, 19200-3 (2005). [CrossRef]
  9. L. Duan, W. Zhang, S. Zhong, and Z. Fu, "Enhancement of ultraviolet emissions from ZnO films by Ag doping," Appl. Phys. Lett. 88, 232110-3 (2006). [CrossRef]
  10. Q1. C. W. Lai, J. An, and H. C. Ong, "Surface-plasmon-mediated emission from metal-capped ZnO thin films," Appl. Phys. Lett. 86, 251105-3 (2005). [CrossRef]
  11. 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). [CrossRef] [PubMed]
  12. J. M. Lin, C. L. Cheng, H. Y. Lin, and Y. F. Chen, "Giant enhancement of band edge emission in ZnO and SnO nanocomposites," Opt. Lett. 31, 3173-3175 (2006). [CrossRef] [PubMed]
  13. Y. Cui, and C. M. Lieber, "Functional nanoscale electronic devices assembled using silicon nanowire building blocks," Science 291, 851-853 (2001). [CrossRef] [PubMed]
  14. X. Duan, Y. Huang, Y. Cui, J. Wang, and C. M. Lieber, "Indium phosphide nanowires as building blocks for nanoscale electronic and optoelectronic devices," Nature (London) 409, 66-69(2001). [CrossRef]
  15. L. A. Peyser, A. E. Vinson, A. P. Bartko, and M. R. Dickson, "Photoactivated fluorescence from individual silver nanoclusters," Science 291, 103-106 (2001). [CrossRef] [PubMed]
  16. N. Ohashi, T. Ishigaki, N. Okada, T. Sekiguchi, and H. Haneda, "Effect of hydrogen doping on ultraviolet emission spectra of various types of ZnO," Appl. Phys. Lett. 80, 2869-2871 (2002). [CrossRef]
  17. T. Gao, Q. H. Li, and T. H. Wang, "Sonochemical synthesis, optical properties, and electrical properties of core/shell-type ZnO nanorods/CdS nanoparticles composites," Chem. Mater. 17, 887-892 (2005). [CrossRef]
  18. J. J. Wu, and S. C. Liu, "Low-temperature growth of well-aligned ZnO nanorods by chemical vapor deposition," Adv. Mater. 14, 215-218 (2002). [CrossRef]

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.


« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited