4.6 Article

Preparation of lanthanide doped CdS, ZnS quantum dots in natural polysaccharide template and their optical properties

Journal

OPTICAL MATERIALS
Volume 34, Issue 4, Pages 646-651

Publisher

ELSEVIER
DOI: 10.1016/j.optmat.2011.09.013

Keywords

Doped quantum dots; CdS QDs; ZnS QDs; Lanthanide; Polysaccharide

Funding

  1. National Natural Science Foundation of China [51103046, 30972323]
  2. SCUT [2009220043, 2009ZM0182]
  3. National Key Basic Research Program (973 Program) of China [2010CB732201]
  4. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing (Wuhan University of Technology) [2010-KF-13]
  5. Key Laboratory of Renewable Energy and Gas Hydrate, Chinese Academy of Science [0907k4]

Ask authors/readers for more resources

Employing a biomimic method using polysaccharide as template, luminescent lanthanide ions doped CdS and ZnS quantum dots (QDs) were prepared. According to the results of TEM and absorbance, nanocrystals with an average size of 6 nm were formed under mild condition without any toxic and expensive agent applied. Differentiating from the un-doped CdS and ZnS QDs prepared in polysaccharide template, the lanthanide doped QDs exhibited obvious dopant emission in their photoluminescence spectrum. It was also found that the dopant PL became more prominent with increasing lanthanide doping concentration, while the highest PL intensity was obtained at a doping level of 1% for both of CdS and ZnS QDs. When different lanthanide ions were introduced into the CdS QDs in polysaccharide template, varied emission wavelength were able to be obtained. This study provides an easy, mild and environmental friendly alternative method to prepare doped quantum dots. In addition, the bioactivity and processabilities endowed by the polysaccharide template may expand the applications potential of this type of optical materials. (C) 2011 Elsevier B.V. All rights reserved.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.6
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available