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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 49, Iss. 14 — May. 10, 2010
  • pp: 2566–2570

Synthesis and optical property of water-soluble ZnS:Cu quantum dots by use of thioglycolic acid

Wentao Zhang and Hong-Ro Lee  »View Author Affiliations

Applied Optics, Vol. 49, Issue 14, pp. 2566-2570 (2010)

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For additional use in industry and biomedicine, water-soluble Cu 2 + -doped ZnS quantum dots (QDs) ( Zn S : Cu ) were synthesized with thioglycolic acid (TGA) as the stabilizer in aqueous solutions in air. The products were characterized by x-ray diffraction, ultraviolet–visible spectroscopy, transmission electron microscopy, and photoluminescence. The effect of Cu 2 + doping concentration and TGA / ( Zn + Cu ) molar ratio on crystal structures and the luminescent intensity of Zn S : Cu QDs have been investigated. As a result, The as-prepared Zn S : Cu QDs had diameters of 10 12 nm and a sphere monodisperse form that consists of Zn S : Cu nanoparticles of approximately 2 nm . The optimum Cu 2 + doping concentration and TGA / ( Zn + Cu ) molar ratio were obtained when the photoluminescent emission showed a maximum value.

© 2010 Optical Society of America

OCIS Codes
(300.6540) Spectroscopy : Spectroscopy, ultraviolet
(280.4788) Remote sensing and sensors : Optical sensing and sensors
(270.5585) Quantum optics : Quantum information and processing
(010.5620) Atmospheric and oceanic optics : Radiative transfer

ToC Category:
Quantum Optics

Original Manuscript: November 12, 2009
Revised Manuscript: March 26, 2010
Manuscript Accepted: April 11, 2010
Published: May 4, 2010

Virtual Issues
Vol. 5, Iss. 9 Virtual Journal for Biomedical Optics

Wentao Zhang and Hong-Ro Lee, "Synthesis and optical property of water-soluble ZnS:Cu quantum dots by use of thioglycolic acid," Appl. Opt. 49, 2566-2570 (2010)

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