Print ISSN: 1681-6900

Online ISSN: 2412-0758

Keywords : Nanostructures


Electrical properties of Nano crystalline ZnxCd1-xS thin films prepared by CBD technique

Jamal F. Mohammad; Hamed. S. Al-jumaili

Engineering and Technology Journal, 2015, Volume 33, Issue 7, Pages 1267-1272

Nanocrystalline zinc cadmium sulfide (ZnxCd1-xS) thin films were deposited on glass substrate by chemical bath deposition (CBD) technique using the mixed aqueous solution of zinc chloride ((ZnCl2), cadmium chloride (CdCl2), thiourea (CS(NH2)2) and ammonia solution (NH4OH). The as deposited films were characterized by high quality instrument type (HMS-3000). The results show that all the prepared films have n-type conductivity; this is concluded from the Hall measurements. The electrical conductivity is found to decrease with increasing x, while the activation energies are found to be increasing from (0.458 to 0.860 eV) as x increase from ( 0.1to 0.9).

Effect of Substrate Temperature on the Structural and Morphological Properties of Nano-structure ZnO films by Pulsed Laser Deposition

Adawiya J. Haider; Afnan k. yousif

Engineering and Technology Journal, 2011, Volume 29, Issue 1, Pages 58-64

In this work, ZnO thin films were grown on sapphire (0001) substrate by
Pulsed Laser Deposition using SHG with Q-switched Nd:YAG pulsed laser operation
at 532nm in O2 gas ambient 5×10-2 mbar at different substrate temperatures varying
from room temperature to 500°C. The influence of the substrate temperature on the
structural and morphological properties of the films were investigated using XRD and
SEM. As result, at substrate 400°C, a good quality and crystalline films were deposited
that exhibits an average grain size (XRD) of 22.42nm with an average grain size
(SEM) of 21.31nm.