2017 Volume 54 Issue 9 Pages 609-615
SnO2 quantum dot was successfully synthesized at ambient temperature via ozone bubbling to suspension including Sn6O4(OH)4 under pH of 12. It was clarified that use of SnF2 as starting material enables to obtain clear and stable SnO2 quantum dot suspension. Possible formation mechanism of quantum dot was proposed and shift of fluorescence was predicted with use of varied basic solution for neutralization and pH adjustment based on the hypothesis that shift of fluorescence is attributed to change in size. And this prediction was confirmed by experiment. Finally addition of Zn as dopant gave improved luminescence intensity without shift of fluorescence.
SnO2 quantum dot developed in this work does not include any cadmium, thus application as alternative to conventional CdSe and CdS is expected.
