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Cobalt sulphide thin films: Chemical bath deposition,growth and properties
Authors:S.T. Mane  S.S. Kamble  L.P. Deshmukh
Affiliation:1. Thin Film & Solar Studies Research Laboratory, Department of Physics, Solapur University, Solapur, Solapur-Pune Road, Kegaon, Solapur-413255, (M.S.) India;2. Bharat Ratna Indira Gandhi College of Engineering, Solapur-Pune Road, Kegaon, Solapur-413255, (M.S.) India;1. Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan, 430074, PR China;2. Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemistry and Environmental Engineering, Wuhan Institute of Technology (WIT), 693 Xiongchu Avenue, Wuhan, 430073, PR China;3. School of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang, 414006, PR China;4. Jiangsu Gaochun Senior High School, Room 507, Building 8, Yishuijiayuan, Gaochun District, Nanjing City, Jiangsu Province, 211300, PR China;1. State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province, Zhejiang University, Hangzhou, 310027, China;2. Center for High Pressure Science and Technology Advanced Research (HPSTAR), Shanghai, 201203, China;3. Research Institute of Narada Power Source Co., Ltd, Hangzhou, 311305, China;4. School of Physical Science and Technology, Lanzhou University, Lanzhou, 730000, China;1. Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, School of Chemistry and Chemical Engineering, University of Jinan, Ji’nan 250022, China;2. Department of Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;1. Department of Physics, Faculty of Arts and Sciences, Mustafa Kemal University, Hatay, Turkey;2. Department of Physics, Faculty of Arts and Sciences, Marmara University, Istanbul, Turkey;1. Department of chemistry, College of Science, Korea University, Anam Dong, Seoul 136-713, Republic of Korea;2. Clean Energy Research Center, Korea Institute of Science and Technology (KIST), 39-1 Hawolgock Dong, Seoul 136-791, Republic of Korea;1. Center for Interdisciplinary Research, D. Y. Patil University Kolhapur, 416 006 M. S., India;2. Department of Materials Science and Engineering, Chonnam National University, Gwangju 500-757, South Korea
Abstract:In the present report synthesis of CoS thin films was carried out by a modified liquid phase chemical growth process. Dark green coloured CoS thin films with hexagonal wurtzite polycrystalline structure and average grain size of ≈ 15 nm were deposited. Surface morphology reveals a randomly oriented network of elongated thread like grains. The absorption coefficient of the CoS thin film is high (α  104–105 cm? 1) and a direct band gap of 1.13 eV has been observed. n-type conduction is found in the deposited films which can be attributed to the lack of stoichiometry.
Keywords:
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