Abstract
Cadmium selenide nanocrystalline thin films of quasi-spherical morphology are prepared by evaporating CdSe nanopowders on glass substrates. Slightly oval shaped CdSe particles of about 165 nm average size (in 2-D) could be assembled over glass substrates by controlling the film thickness. Morphologies like assembly of particles, interconnected particles with mosaic-like structures and thin films of smooth surfaces could be prepared simply by controlling film thickness. A mechanism for such morphological variations is proposed. Observed variation of band gap energy in the films is explained in terms of quantum confinement effect and substrate-film interface strain.
Original language | English |
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Pages (from-to) | 6474-6480 |
Number of pages | 7 |
Journal | Journal of Nanoscience and Nanotechnology |
Volume | 8 |
Issue number | 12 |
Publication status | Published - Dec 2008 |
Keywords
- CdSe thin films
- Morphology
- Nanocrystalline
- Optical properties
ASJC Scopus subject areas
- Bioengineering
- General Chemistry
- Biomedical Engineering
- General Materials Science
- Condensed Matter Physics