LAUSR

In this study, high pure and multi-shaped PbS synthesized via hydro- and solvothermal methods exhibited two growth mechanisms. According to the comparative experiments, the two growth mechanisms of PbS were illustrated. It was revealed that on one hand, in ethylenediamine (En), PbS exhibited epitaxial growth with increasing the temperature. On the other hand, in deionized water, PbS exhibited closed growth with increasing the temperature. In order to further verify the growth mechanism, the comparative experiment in mixed solvents was studied. In addition, the optical performances of the samples were also performed. These results demonstrated that our work offers an effective way to develop the tunable synthesis of multi-shaped PbS for various applications.