Critical parameters for the scale-up synthesis of quantum dots.
The optical properties of quantum dots strongly depend on the synthesis conditions including the reagent grade of the chemicals. We developed a synthesis set-up allowing the reproducible preparation of quantum dots with a high control over chemical and physical parameters. Here, we report on the effects of the injection speed, the stirring velocity and the reagent grade of the chemicals on the photoluminescence behaviour of CdSe quantum dots. Additionally we compared the commonly used hot-injection method with a novel one-pot approach leading to a slightly larger particle size distribution of the resulting high quality quantum dots in the latter case.
Freiburg Materials Research Center, University of Freiburg, Stefan Meier Strasse 21, 0-79104 Freiburg, Germany.
Ying
Y
Yuan
Frank-Stefan
FS
Riehle
Haoshuang
H
Gu
Ralf
R
Thomann
Gerald
G
Urban
Michael
M
Krüger