Preparation and characterization of ZnTe and ZnSe thin films for the ECALE technique

• Grant number: 09/00788-1
• Support Opportunities: Scholarships in Brazil - Doctorate (Direct)
• Start date: October 01, 2009
• End date: February 28, 2014
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Physical-Chemistry
• Principal Investigator: Lucia Helena Mascaro Sales
• Grantee: Murilo Fernando Gromboni
• Host Institution: Centro de Ciências Exatas e de Tecnologia (CCET). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil
• Associated scholarship(s): 12/13678-2 - Physical characterization of thin films of ZnSe and ZnTe prepared by electrodeposition, BE.EP.DD

Abstract

Binary semiconductors can be applied in devices optoelectronics, solar cells, detectors of infrared and lasers. Among the several binary semiconductors it has been having a growing interest in the last decades in semiconductors obtained from chalcogenide thin films due to application in several fields of the science and technology. These semiconductors take the obtaining of materials whose gaps collect the visible spectrum and the efficiency of optic conversion is high. Recently the electrodeposition has been appearing as a technique simple, economical, viable and capable of producing films of good quality for application in devices. Other attractions of this technique are: capacity to produce devices with large area, low deposition temperature and possibility of the control of the thickness and bath deposition composition. However, most of the employed conditions to the electrodeposition don't take the good quality deposits for application in devices. It becomes like this important the understanding and control of the process of electrodeposition of these semiconductors looking for to obtain nanostructures in the sense of improving the obtained films of the point of view of their properties optoelectronics. In this research they will be obtained fine films of ZnSe and ZnTe by electrodeposition on different substrate. They will be studied the films obtained by underpotoential deposition of nanolayers of the individual elements, deposition epitaxial (ECALE) and the simultaneous codeposition. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

MURILO F. GROMBONI; FRANCISCO W. S. LUCAS; LUCIA H. MASCARO. Optical Properties and Surface morphology of ZnTe thin films prepared by multiple potential steps. Journal of the Brazilian Chemical Society, v. 25, n. 3, p. 526-531, 2014-03-00. (09/00788-1, 10/18134-5, 12/10947-2)