Glycerol as additive in copper indium gallium diselenide electrodeposition: morphological, structural and electronic effects

Author(s)

Lucas, Francisco Willian de S. ^[1] ; Lima, Alan R. F. ^[1] ; Mascaro, Lucia H. ^[1]

Affiliation

^[1] Univ Fed Sao Carlos, Dept Chem, BR-13565905 Sao Paulo - Brazil

• Document type: Journal article
• Source: RSC ADVANCES; v. 5, n. 24, p. 18295-18300, 2015.
• Web of Science Citations: 6

Abstract

The co-electrodeposition of copper, indium, gallium and selenium from a pH 1.5 acid bath onto an FTO substrate in the presence of the additive glycerol (GLR) is studied. The concentration of additive in the bath is evaluated, and conditions are optimised for deposition of Cu(In, Ga)Se-2 (CIGSe) thin films. The films are characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Raman spectroscopy, ultraviolet-visible-near-infrared spectroscopy (UV-Vis-NIR), Mott-Schottky and photocurrent measurements. Mott-Schottky data, XRD and SEM studies reveal an improvement of the crystalline quality and the reduction the number of surface defects of the CIGSe films electrodeposited in presence of the additive. Photo-electrochemical and UV-Vis-NIR measurements show p-type photoconductivity with band gap of 1.34 eV. (AU)

• 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
• FAPESP's process: 08/57872-1 - National Institute for Materials Science in Nanotechnology
• Grantee: Elson Longo da Silva
• Support type: Research Projects - Thematic Grants
• 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