Abstract:

In this paper, the preparation methods of PhS colloidal quantum dots are divided into threcategories according to the difference of Pb source and Sulfur source, and the comparison of these threpreparation methods is described. The commonly used modification methods are also described with therequirements of PbS application in different fields. In the end, the possible preparation and modificationmethods of PbS are proposed. t has a certain reference value for the preparation and application of PhSquantum dots.

Key words: PbS colloidal quantum dots, stability, liquid-phase synthesis , infrared band