Electrodeposition Conditions Effect Sb2Se3 Thin-Film Properties

Author(s)

Costa, Magno Barcelos ^[1] ; Lucas, Francisco W. S. ^[1] ; Mascaro, Lucia Helena ^[1]

Affiliation

^[1] Univ Fed Sao Carlos, Rd Washington Luiz, Km 235, BR-13565905 Sao Carlos, SP - Brazil

• Document type: Journal article
• Source: CHEMELECTROCHEM; v. 6, n. 11, p. 2937-2944, JUN 3 2019.
• Web of Science Citations: 2

Abstract

Sb2Se3 is presented as a promising light absorber material of low-cost and good photoelectrocatalytic activity. Among the different synthetic methods for this semiconductor, electrodeposition has gained attention. In this context, a study of the electrodeposition parameters is an important aspect for obtaining films with optimized photocatalytic characteristics. Thus, in this work, we studied the effect of precursor concentration, the total charge of deposition, the type of supporting electrolyte, bath temperature, and the deposition potential on obtaining antimony selenide thin films electrochemically and on the morphological, structural, and optoelectronic properties of these films. One of the most interesting observations was the huge impact of these parameters on the morphology. The Se-rich films showed a tendency to have a rod-like morphology and relatively better stability to photocorrosion. The thickness of the film is another parameter that hugely affected the photocatalytic properties. From the evaluation of the photocurrent values presented by the films, the optimized electrodeposition parameters were found. (AU)

• FAPESP's process: 17/21365-8 - Electrodeposition and characterization of Sb2Se3 and MSbxSey (M = Cu, Co, Ni, or Zn) thin films for applications in the hydrogen production and CO2 reduction.
• Grantee: Magno Barcelos Costa
• Support type: Scholarships in Brazil - Doctorate
• FAPESP's process: 18/16401-8 - Photocatalysts and photoelectrodes for obtaining renewable fuels
• Grantee: Lucia Helena Mascaro Sales
• Support type: Regular Research Grants
• FAPESP's process: 17/11986-5 - Research Division 1 - dense energy carriers
• Grantee: Ana Flávia Nogueira
• Support type: Research Grants - Research Centers in Engineering Program
• 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: 18/03156-5 - A high-throughput combinatorial approach in the study of metallic alloys and their respective chalcogenides for application in the CO2 photo-/electrochemical reduction reaction
• Grantee: Francisco Willian de Souza Lucas
• Support type: Scholarships in Brazil - Post-Doctorate