title: Nanocrystalline CdSe thin films of different morphologies in thermal evaporation process.
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.
authors.affiliation: Instituto de Física, Universidad Autónoma de Puebla, Apdo. Postal J-48, Puebla, Pue. 72570, Mexico.
authors.forename: U
authors.initials: U
authors.lastname: Pal
authors.forename: M Herrera
authors.initials: MH
authors.lastname: Zaldivar
authors.forename: R
authors.initials: R
authors.lastname: Sathyamoorthy
authors.forename: V
authors.initials: V
authors.lastname: Manjuladevi
authors.forename: P
authors.initials: P
authors.lastname: Sudhagar
authors.forename: S Chandra
authors.initials: SC
authors.lastname: Mohan
authors.forename: S
authors.initials: S
authors.lastname: Senthilarasu