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- Title
Size dependent structural, optical and morphological properties of ZnS:Cu thin films.
- Authors
Muthu Kumaran, S.; Ashok Kumar, M.
- Abstract
ZnS:Cu thin films have been deposited on glass substrate by a simple neutral pH solution synthesis route and chemical bath deposition technique. The copper concentration was varied between 0 and 0.1 M%. The X-ray diffraction and scanning electron microscope studies show the average size of the nanoparticles are below 4 nm (Bohr diameter). The effect of film thickness on the optical and structural properties has been studied. The optical absorption studies show the band gap energy of ZnS:Cu films decreases from 3.68 to 3.43 eV as thickness varied from 318.3 to 334.1 nm. The structural estimation shows the variation in particle size from 2.67 to 3.14 nm with thickness. The insignificant change in band gap may be due to the increase in particle size and quantum size effect.
- Subjects
THIN films; ZINC sulfide; COPPER; X-ray diffraction; SCANNING electron microscopes; NANOPARTICLES; LIGHT absorption; PARTICLE size determination
- Publication
Journal of Materials Science: Materials in Electronics, 2012, Vol 23, Issue 3, p811
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-011-0497-4