公开(公告)号：US10950742B2

公开(公告)日：2021-03-16

申请号：US16343807

申请日：2017-11-01

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Doh Kwon Lee ,  In Ho Kim ,  Hee Sun Yun ,  Jang Mi Lee

IPC: C25D3/56 ,  C25D5/50 ,  C25D5/48 ,  C25D5/02 ,  C25D5/00 ,  C25D5/10 ,  H01L31/0445 ,  H01L31/0392 ,  H01L31/18

Abstract: A method for preparing a film of a CIS semiconductor compound overcoated by a color layer includes preparing an electrolyte solution by mixing precursors of film constituents including Cu, In, and Se with a solvent; configuring an electrodeposition circuit by connecting an electrochemical cell comprising the electrolyte solution, a working electrode, and a counter electrode to a voltage or current supply device; disposing a photomask having the predetermined pattern on the working electrode; producing the film through the photomask on a surface of the working electrode by applying a reduction voltage or current; disposing a light source to emit light toward the photomask; and photoelectrically depositing the film on the surface of the working electrode at least in the predetermined pattern while illuminating light through the photomask; and forming a color layer of CuSe at least in the predetermined pattern on the film employed as a working electrode using photo-electrodeposition.