| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1612105 | Journal of Alloys and Compounds | 2014 | 6 Pages |
Abstract
High luminescent CdZnTe quantum dots (QDs) were synthesized by a one-step aqueous method using 3-mercapto propionic acid (MPA) as a stabilizer. The as-prepared samples are in good homogeneity and dispersity with an average particle size of 5Â nm. Accordingly, the size and composition-dependent fluorescent emission wavelength of the resultant CdZnTe alloyed QDs can be continuously tuned from 490 to 660Â nm. Compared with the difficult acquisition of CdZnTe QDs with a high Zn/Cd molar ratio in alkaline condition, CdZnTe QDs with a Zn/Cd molar ratio from 1 to 7 has been obtained in weak acid condition by adjusting the pH value of precursor solution. The maximum quantum yield has reached nearly 80% without any post-treatment. And it also showed excellent stability against time.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Jingwei Cheng, Dongmei Li, Tao Cheng, Bing Ren, Gang Wang, Jie Li,