Studies on the properties of cdS films deposited from pH-controlled growth solutions

• Published in: Materials research (São Carlos, São Paulo, Brazil) Vol. 16; no. 4; pp. 937 - 943
• Main Authors: Ortuño-López, M.B., Ochoa-Landín, R., Sandoval-Paz, M.G., Sotelo-Lerma, M., Flores-Acosta, M., Ramírez-Bon, R.
• Format: Journal Article
• Language: English
• Published: ABM, ABC, ABPol 01.07.2013; Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)
• Subjects: cadmium sulfide; chemical deposition PACS: 68.55.-a, 68.55.Jk, 81.05.Dz, 81.10.Dn, 81.16.Be; ENGINEERING, CHEMICAL; MATERIALS SCIENCE, MULTIDISCIPLINARY; METALLURGY & METALLURGICAL ENGINEERING; optical properties; structural properties; structural properties; cadmium sulfide; optical properties; chemical deposition PACS: 68.55.-a, 68.55.Jk, 81.05.Dz, 81.10.Dn, 81.16.Be
• ISSN: 1516-1439; 1980-5373; 1980-5373
• DOI: 10.1590/S1516-14392013005000103

In this work we have studied the properties of CdS films obtained by the chemical bath deposition technique. We studied the influence of pH control of the reaction solution on the structural and optical properties of chemically deposited CdS films. For this, we deposited two sets of CdS films on glass substrates using two different reaction solutions. The main difference between the solutions was that one included the use of a pH-10 NH4OH/NH4Cl controller solution or buffer, which produces a more uniform pH of the reaction solution during the film-growth process. Using each reaction solution, five CdS films were deposited at 80 °C, varying the deposition time from 15 to 120 minutes. The structural and optical properties of both sets of films were determined by X-ray diffraction and by absorption, transmission and reflection spectroscopy. The differences in the properties of the films were analyzed in terms of pH control.