Preparation of nanocrystalline PbS thin films and effect of Sn doping and annealing on their structural and optical properties |
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| Authors: | R Das |
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| Affiliation: | 1. Department of Physics, Faculty of Arts and Sciences, Mustafa Kemal University, 31034 Hatay, Turkey;2. Department of Chemistry, Faculty of Arts and Sciences, Mustafa Kemal University, 31034 Hatay, Turkey;1. Nano-Optoelectronics Research and Technology Laboratory, School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia;2. Department of Physics College of Sciences, University of Anbar, P.O. Box PO. (55 431), Baghdad, Iraq;3. Nanotechnology Centre, University of Bahrain, P.O. Box 32038, Bahrain;4. Department of Physics, College of Science, University of Bahrain, P.O. Box 32038, Bahrain;1. Benemérita Universidad Autónoma de Puebla, CIDS, Av. San Claudio y 18 Sur, Col. San Manuel, Ciudad Universitaria, CP 72570, P.O. Box 1067, Puebla, Pue., 7200, Mexico;2. Instituto de Energías Renovables, Universidad Nacional Autónoma de México, 62580, Temixco, Morelos, Mexico;3. Benemérita Universidad Autónoma de Puebla, Lab. de Ciencias de Materiales de la Facultad de Ciencias Químicas, P.O. Box 1067, Puebla, Pue., 72001, Mexico;1. Department of Physics, Azarbaijan Shahid Madani University, Tabriz, Iran;2. Research Group of Processing and Communication, Azarbaijan Shahid Madani University, Tabriz, Iran;3. Faculty of Physics, Tabriz University, Tabriz, Iran;1. Laboratoire Couche Minces et Interfaces, Université frères Mentouri Constantine, 25000, Constantine, Algeria;2. Université de Lorraine, Institut Jean Lamour UMR 7198, Vandoeuvre 54506, France |
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| Abstract: | Nanocrystalline PbS and Sn doped PbS thin films were successfully deposited on suitably cleaned glass substrate at constant room temperature, using the chemical bath deposition technique. Before, adding Sn doping content, the pure PbS thin films were deposited at room temperature for several dipping times to optimize the deposition time. After deposition, the films were also annealed at 400 °C for 1 h in air. The crystal structures of the films were determined by X-ray diffraction studies. The films were adherent to the substrate and well crystallized according to cubic structure with the preferential orientation (2 0 0). The crystallite size of the pure PbS thin films at optimized deposition time 30 min was found to be 40.4 nm, which increased with Sn content in pure PbS thin film. The surface roughness was measured by AFM studies. The band gaps of the films were determined by transmission spectra. Experiments showed that the growth parameters, doping and annealing, influenced the crystal structure, and optical properties of the films. |
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