Preparation and characterization of iron sulphide thin films by chemical bath deposition method

• Main Authors: Kassim, Anuar, Tan, Wee Tee, Abdullah, Dzulkefly Kuang, Mohd. Sharif, Atan, Ho, Soon Min, Gwee, Siew Yong, Nagalingam, Saravanan
• Format: Article
• Language: English; English
• Published: The Department of Chemistry, Universitas Gadjah Mada 2010
• Online Access: http://psasir.upm.edu.my/id/eprint/16311/1/Preparation%20and%20characterization%20of%20iron%20sulphide%20thin%20films%20by%20chemical%20bath%20deposition%20method.pdf; http://psasir.upm.edu.my/id/eprint/16311/; http://pdm-mipa.ugm.ac.id/ojs/index.php/ijc/article/viewFile/477/494

FeS2 thin films have been deposited by using low cost chemical bath deposition technique. The films obtained under deposition parameters such as bath temperature (90°C), deposition period (90 min), electrolyte concentration(0.15 M)and pH of the reactive mixture (pH 2.5). The thin films were characterized using X-ray diffraction and atomic force microscopy in order to study the structural and morphological properties. The band gap energy, transition type and absorption properties were determined using UV-Vis Spectrophotometer. X-ray diffraction displayed a pattern consistent with the formation of an orthorhombic structure, with a strong (110) preferred orientation. Atomic force microscopy image showed the substrate surface is well covered with irregular grains. A direct band gap of 1.85 eV was obtained according to optical absorption studies.