Highly luminescent CdSe/ZnSe core-shell quantum dots of one-pot preparation in octadecene.
CdSe/ZnSe core-shell quantum dots were synthesized using a new one-pot procedure where the core was prepared in octadecene. A ZnSe shell around a CdSe nanoparticle was formed by the reaction of selenium-richness on the surfaces of CdSe nanoparticles with Zn2+ from the injected zinc stearate precursor. The optical properties, luminescence kinetics, and the effect of shell thickness of as-prepared QDs were studied, which verifies the high quality of the resulting QDs. The new approach is effective not only for preparing core/shell QDs, but also for reducing the complexity of synthesis, toxicity, and reagent cost.
Zeng
Qinghui
Q
Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Science, Changchun 130033, China.
Kong
Xianggui
X
Zhang
Youlin
Y
Zhang
Hong
H
D000475:Alkenes; D019187:Cadmium Compounds / Q000737:chemistry*; D036103:Nanotechnology; D045663:Quantum Dots; D018036:Selenium Compounds / Q000737:chemistry*; D012997:Solvents; D017967:Zinc Compounds / Q000737:chemistry*
D000475:Alkenes; D019187:Cadmium Compounds; D018036:Selenium Compounds; D012997:Solvents; D017967:Zinc Compounds; C058667:cadmium selenide; C109760:1-octadecene; C044696:zinc selenide