1. Deposition of cadmium sulfide and zinc sulfide thin films by aerosol-assisted chemical vapors from molecular precursors.
- Author
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MEMON, Ashfaque Ahmed, DILSHAD, Malik, REVAPRASADU, Neerish, MALIK, Mohammad Azad, RAFTERY, James, and AKHTAR, Javeed
- Subjects
CADMIUM sulfide ,ZINC sulfide ,METALLIC thin films ,AEROSOLS ,CHEMICAL vapor deposition ,CHEMICAL precursors - Abstract
New complexes with the general formula [M(S
2 CNn Bu2 )2 ] [where M = CdII (1) and ZnII (2)] were synthesized and used as single source precursors to deposit thin films of cadmium sulfide and zinc sulfide by the aerosol-assisted chemical vapor deposition technique. The single crystal X-ray structures of 1 and 2 are also reported. Ther mogravimetric analysis of 1 and 2 showed that both precursors decompose cleanly in a single step to produce their respective metal sulfides. The deposition of thin films was carried out on soda glass substrates in the 350{450 ° C temperature range under inert conditions. The as-deposited thin films were characterized by powdered X-ray diraction and field emission scanning electron microscopy. Thin films of CdS deposited at low temperature (350 ° C) consist of densely packed granular crystallites with an average size of ca. 150 nm, while at higher temperatures (400 and 450 ° C) particles with varying sizes and mixed morphologies are observed. The ZnS thin films deposited at 400 ° C showed rod-like structures, whereas dense globular-like structures were obtained at 450 ° C. Energy dispersive X-ray analysis was performed to study the chemical composition of the thin films. [ABSTRACT FROM AUTHOR]- Published
- 2015
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