Electrochemical Deposition of the Single Phase Tlx Cu3 - x Se2 Thin Films

• Document type: Journal article
• Source: Journal of the Brazilian Chemical Society; v. 29, n. 12, p. -, Dez. 2018.

Abstract

In spite of selenide semiconductors having a wide application area, TlCu2 Se2 (TCSe) is poorly studied and its synthesis by non-vacuum or thermic methodology in film form is non-existent. Generally, the main problems of applying these TCSe compounds are related to complicated single phase growth, and the great time consuming and non-scalable fabrication method. In this work, the facile, fast, scalable and new electrochemical deposition of this material was proposed as a workaround for these main problems and obtaining single phase thin film. Thus, the electrodeposited Tlx Cu3 - x Se2 films were characterized by scanning electron microscopy, X-ray diffraction (with Rietveld refinement) and energy dispersive X-ray spectroscopy. They showed interesting variation of composition (x =1.1, 1.2, and 1.25) and morphology as function of the electrodeposition potential, electrolytic bath temperature and thermal treatment. (AU)

• FAPESP's process: 13/07296-2 - CDMF - Center for the Development of Functional Materials
• Grantee: Elson Longo da Silva
• Support type: Research Grants - Research, Innovation and Dissemination Centers - RIDC
• FAPESP's process: 16/10513-3 - Synthesis and application of functional nanostructured materials in Electro/photoelectrocatalysis under continuous flow conditions: a new perspective for synthesis and functionalization of heterocyclic system
• Grantee: Francisco Willian de Souza Lucas
• Support type: Scholarships in Brazil - Post-Doctorate
• FAPESP's process: 12/10947-2 - Preparation and characterization of MBSe thin films (m = Ag or Cu; b = in, GA, SB or TL; and s = s or se) for application in photovoltaic cells"
• Grantee: Francisco Willian de Souza Lucas
• Support type: Scholarships in Brazil - Doctorate