Abstract
The object of the present invention is to provide a method for preparing a nano-sheet array structure of a Group V-VI semiconductor, comprising: (A) providing an electrolyte containing a hydrogen ion and disposing an auxiliary electrode and a working electrode in the electrolyte, wherein the working electrode comprises a Group V-VI semiconductor bulk; and (B) applying a redox reaction bias to the auxiliary electrode and the working electrode to form a nano-sheet array structure on the bulk.