MnS Hierarchical Hollow Spheres with Novel Shell Structure

Abstract

High yields of MnS microspheres with novel hierarchical structure were prepared through a simple solution\nmethod. Field emission scanning electron microscopy and transmission electron microscopy analyses reveal\nthat the microsphere has a core−shell structure: the interior hollow sphere is covered by a shell consisting\nof nanorod arrays. Interestingly, the nanorod is a wurtzite (WZ)/zinc blende (ZB) phase admixture with a\nlarge amount of stacking faults/twins. The alternation of WZ and ZB along the growth direction of the nanorod\nenables it to exhibit the features of a quantum well. Furthermore, the WZ/ZB admixture structure could also\nbe regarded as a type II homomaterial heterostructure. All these features imply that the novel core−shell\nstructure has great potential for applications, among them the quantum well photoelectrical and heterostructure\nphotoconduction fields.