One-step electrodeposition of CdS/ZnS bilayer from an aqueous mixture of Cd 2+ and Zn 2+

Electrochemical thin film deposition in aqueous mixtures containing Cd 2+ , Zn 2+ , and thioacetamide has been investigated. It has been found that the atom-by-atom growth of well-crystallized CdS thin film preferentially takes place at the early stage of the reaction, followed by the cluster-by-cluster growth of the poorly crystallized ZnS outer layer, thus resulting in the formation of CdS/ZnS bilayer by a one-step synthesis.

[1]  Y. Yamamoto,et al.  (Cd,Zn)S thin films prepared by chemical bath deposition for photovoltaic devices , 1996 .

[2]  D. Lincot,et al.  Phase formation processes in solution at the atomic level: Metal chalcogenide semiconductors , 1995 .

[3]  J. Muto,et al.  Electrodeposition of zinc cadmium sulphide thin films from acidic aqueous electrolyte solution at room temperature , 1995 .

[4]  H. Minoura,et al.  Novel Electrochemical Synthesis of CdS Films from Supersaturated Solutions , 1994 .

[5]  J. Herrero,et al.  Process and Film Characterization of Chemical‐Bath‐Deposited ZnS Thin Films , 1994 .

[6]  D. Lincot,et al.  Mechanism of Chemical Bath Deposition of Cadmium Sulfide Thin Films in the Ammonia‐Thiourea System In Situ Kinetic Study and Modelization , 1993 .

[7]  S. Das.  Characterisation of CdCl2 treated electrodeposited CdS/CdTe thin film solar cell , 1993 .

[8]  P. C. Rieke,et al.  Deposition of cadmium sulfide films by decomposition of thiourea in basic solutions , 1993 .

[9]  J. Herrero,et al.  Chemical Bath Deposition of CdS Thin Films: Electrochemical In Situ Kinetic Studies , 1992 .

[10]  G. C. Morris,et al.  Electrodeposited cadmium zinc sulphide films for solar cells , 1992 .

[11]  P. K. Nair,et al.  Chemically deposited ZnS thin films: application as substrate for chemically deposited Bi2S3, CuxS and PbS thin films , 1992 .

[12]  A. Kitai,et al.  The electrodeposition of thin film zinc sulphide from thiosulphate solution , 1990 .

[13]  K. L. Chopra,et al.  Growth Kinetics and Polymorphism of Chemically Deposited CdS Films , 1980 .