Open AccessStudy of Structural and Optical Properties of ZnS:Ni Thin Films Prepared by Dip Coating Method
Author(s) -
C. Gunasekaran,
V. Senthilkumar,
Preethi H. Kokila,
S. Uma,
S. Banumathi
Publication year - 2013
Publication title -
mapana journal of sciences
Language(s) - English
Resource type - Journals
ISSN - 0975-3303
DOI - 10.12723/mjs.24.3
Subject(s) - materials science , scanning electron microscope , dopant , scherrer equation , crystallite , wurtzite crystal structure , crystallinity , thin film , dip coating , chemical engineering , thiourea , zinc nitrate , coating , mineralogy , zinc , analytical chemistry (journal) , nanotechnology , metallurgy , composite material , doping , chemistry , optoelectronics , chromatography , engineering , organic chemistry
Adherent and uniform films of ZnS and ZnS:Ni were deposited reproducibly by Dip coating method onto a glass substrate, under acidic conditions from solutions containing Zinc Nitrate, Nickel Nitrate, Ammonium Nitrate, Sodium citrate, thiourea and distilled water. The growth of ZnS thin films on glass substrates have been thoroughly investigated by SEM, EDAX and X- ray diffraction techniques. The grain sizes (D) of crystallites were estimated using the Scherrer’s formula. Depending on selection of precursors and presence of dopant, ZnS and ZnS films can be of Sphalenite or wurtzite structure. The effect of the dopant on the crystallinity and surface morphology of ZnS thin films have been studied. The surface morphology, which has been evaluated by scanning electron microscope (SEM), shows a relatively flat and uniform surface.