Monochromatic Photochemical Deposition and Characterization of Zinc Selenide Thin Films

Sanjay Pawar1

Vilas A. Tabhane1

Prasad E. Lokhande1,Email

Jupinder Kaur1

Raghvendra S. Dubey2 

H. M. Pathan1,Email

1Advanced Physics Laboratory, Department of Physics, Savitribai Phule Pune University, Pune-411007, India
2Department of Nanotechnology, Advanced Research Laboratory for Nanomaterials and Devices, Swarnandhra College of Engineering and Technology , Seetharampuram, Narsapur, India

 

Abstract

ZnSe as an II-IV group has attracted attention as a binary semiconductor material due to its superior chemically stability than other semiconducting materials such as ZnS. In this work, ZnSe thin film was synthesized using a simple, clean and relatively inexpensive monochromatic photochemical synthesis method at room temperature. The structure of the ZnSe films deposited under different coloured illumination was confirmed by X-ray diffraction and the effect of the monochromatic light on the growth rate was observed. The SEM result was demonstrated different morphology of the different films' surfaces, such as granular spherical, cauliflower, fiber, or wire, with a variety of porosity that was achieved by a simpler photochemical route. A change in the optical bandgap between 2.72 eV and 2.82 eV is observed for the red, green, blue, white light, and darkness conditions. And it is further reduced for samples annealed in the air for 2 hours at 100 °C, and 200 °C indicates improved crystallinity. The obtained result suggests that synthesized material can be used for photoelectrochemical solar cells. 

Monochromatic Photochemical Deposition and Characterization of Zinc Selenide Thin Films