Chemically deposited Sb2S3 thin films for optical recording

• Published in: Journal of physics. D, Applied physics Applied physics, 2010-02, Vol.43 (7), p.075404-075404
• Main Authors: Shaji, S, Arato, A, O'Brien, J J, Liu, J, Castillo, G Alan, Palma, M I Mendivil, Roy, T K Das, Krishnan, B
• Format: Article
• Language: English
• Subjects: Beams (radiation); Condensed matter: electronic structure, electrical, magnetic, and optical properties; Condensed matter: structure, mechanical and thermal properties; Cross-disciplinary physics: materials science; rheology; Deposition; Diffraction; Exact sciences and technology; Irradiation; Lasers; Liquid phase epitaxy; deposition from liquid phases (melts, solutions, and surface layers on liquids); Materials science; Methods of deposition of films and coatings; film growth and epitaxy; Optical constants: refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation; Optical properties of bulk materials and thin films; Physical radiation effects, radiation damage; Physics; Recording; Structure and morphology; thickness; Structure of solids and liquids; crystallography; Surfaces and interfaces; thin films and whiskers (structure and nonelectronic properties); Thin film structure and morphology; Thin films; Transformations; Ultraviolet, visible, and infrared radiation effects (including laser radiation)
• ISSN: 0022-3727; 1361-6463
• DOI: 10.1088/0022-3727/43/7/075404

Laser induced changes in the properties of Sb2S3 thin films prepared by chemical bath deposition are described in this paper. Sb2S3 thin films of thickness 550 nm were deposited from a solution containing SbCl3 and Na2S2O3 at 27 degree C for 5 h. These thin films were irradiated by a 532 nm continuous wave laser beam under different conditions at ambient atmosphere. X-ray diffraction analysis showed amorphous to polycrystalline transformation due to laser exposure of these thin films. Morphology and composition of these films were described. Optical properties of these films before and after laser irradiation were analysed. The optical band gap of the material was decreased due to laser induced crystallization. The results obtained confirm that there is further scope for developing this material as an optical recording media.