Open AccessThe Influence of Bath Temperature on the Properties of SILAR Deposited Cobalt Selenide Thin Films
Author(s) -
Ho Soonmin,
T. Joseph Sahaya Anand
Publication year - 2021
Publication title -
engineering, technology and applied science research/engineering, technology and applied science research
Language(s) - English
Resource type - Journals
eISSN - 2241-4487
pISSN - 1792-8036
DOI - 10.48084/etasr.4210
Subject(s) - absorbance , thin film , materials science , band gap , cobalt , grain size , selenide , diffraction , analytical chemistry (journal) , cadmium selenide , lead selenide , nanotechnology , chemical engineering , chemistry , optics , composite material , metallurgy , optoelectronics , selenium , chromatography , physics , quantum dot , engineering
In this paper, cobalt selenide thin films have been deposited onto glass slides with the SILAR method under various bath temperatures. The structure, optical properties, and morphology of thin films were investigated. The X-ray diffraction patterns confirmed that the number of peak intensities increased with increasing bath temperature. From the AFM images, bigger sizes and thicker films were observed for the films prepared at 80°C. The average grain size was estimated to be 0.2µm, 0.15µm, and 0.25µm when the bath temperature was 40°C, 50°C, and 80°C respectively. The highest absorbance value was observed for films prepared at 80°C. The band gap values range from 2eV to 2.4eV.