We report improved methods for electroplating cadmium sulfide (CMS) films. Aprevious problem was cracking/flaking of films deposited from organic solutions of elemental sulfur; attempts to improve adhesion via bath additives reduced grain size. Aqueous baths of thiosulfate ions yield cadmium-richness at low T temperatures (T), long deposition times, and/or poor bath stability. Developments in our work to be discussed include (1) plating ofuniform, adherent, and stoichiometric CdS from tetraethylene baths of CdCl 2 and elemental sulfur at T >70° C with minimal cracking/flaking, (2) improved uniformity/ adherence by use of CdL>, and (3) swept voltage methods in aqueous thiosulfate baths to plate stoichiometric (vs. Cd-rich) films near room temperature.
Kemp, Brandon; Engelken, Robert; Raza, Arif; Aleem, Wasim; Khan, Imran; and Barber, Chris
"Improved Methods for Electroplating Cadmium Sulfide Thin Films,"
Journal of the Arkansas Academy of Science: Vol. 50
, Article 16.
Available at: http://scholarworks.uark.edu/jaas/vol50/iss1/16