Syntheses and Properties  Characterizations of Titanium Oxide/ Cadmium Sulphide Nanocomposites by  Chemical Bath Deposition Technique

B. A. Ezekoye; V. A. Ezekoye; F. I. Ezema; P.O. Offor; D. C. Obiegbunna

Volume : II, Issue : VIII, August - 2013

Syntheses and Properties Characterizations of Titanium Oxide/ Cadmium Sulphide Nanocomposites by Chemical Bath Deposition Technique

B. A. Ezekoye, V. A. Ezekoye, F. I. Ezema, P. O. Offor, D. C. Obiegbunna

Abstract :

Heterojunction thin films of Titanium Oxide/Cadmium Sulphide (TiO2/CdS) were synthesized using chemical bath deposition (CBD) technique. The optical and structural characterizations showed that the samples have good transmittance in the visible and near infrared (NIR) region of the spectrum. The samples have very low reflectance within the visible region; hence will be good absorber of light. The absorption coefficient increases with increasing energy. The refractive index decreases with increasing energy, hence it has negative refractive index. The XRD studies revealed that samples became crystalline after annealing. The synthesized TiO2 /CdS thin films could serve as a window layer in the production of solar cells due to its wide energy band gap. Its optical properties such as low reflectance, high transmittance make it a good candidate for application in agriculture light and energy in the construction of poultry incubators. It could also find applications in transparent electronics.