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    STUDIA CHEMIA - Issue no. 1-2 / 2001  
         
  Article:   NANOSTRUCTURED CDS FILMS OBTAINED BY SPRAY PYROLYSIS. I. THE INFLUENCE OF DEPOSITION PARAMETERS ON THE FILM QUALITY.

Authors:  VIOLETA POPESCU, HOREA IUSTIN NAŞCU. 		 
       
         
  Abstract:  A study regarding conditions for spray pyrolysis deposition of CdS nanostructured films on glass substrates, using aqueous solution containing CdCl2, thiourea and surfactants, is presented. Dry air was used as carrier gas. Deposition parameters such as: substrate temperature, solution composition, gas and solution flow rates, deposition time, layer number, and distance between spraying nozzle and substrate were studied. The optimal conditions for obtaining compact, adherent, and optically clear, with good esthetical looking, thermoreflecting films were established. The film thickness was in the range 20-80 nm. The mechanism of CdS film deposition on glass substrates take places by thermal decomposition of the complexes [Cd(H2O)(SCN2H4)]Cl2 and [Cd(SCN2H4)2]Cl2. These films can be applied for solar control coatings.  
         
     
         
         
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