Title of Abstract

Thin Films of Cu-Doped CdS Prepared by a Pulsed Cathodic Deposition Method in Dimethylsulfoxide

Poster Number

038

College

College of Arts and Sciences

Department

Department of Chemistry, Physics, and Geology

Faculty Mentor

Clifton Harris, Ph.D.

Abstract

Thin films of copper-doped CdS were prepared on conductive oxide substrates (FTO) by application of a cathodic current in an electrolyte bath of Cd2+, Cu2+, complexing agents, and S(0) in DMSO at elevated temperature with a duty cycle of 20%. Film thickness was controlled via the number of pulses and later confirmed by profilometry analysis. P-type conductivity was confirmed by open-circuit and Mott–Schottky analyses. Furthermore, the photoactivity of the films was assessed in neutral media using a three-electrode setup. By depositing this material onto the surface of a p-type oxygen-evolving catalyst (OEC) with suitable band structure, a z-scheme photocatalytic device can be produced and employed for water splitting.

Previously Presented/Performed?

Fourth Annual Clemson Chemistry Research Symposium, Clemson, SC, March 2019

Grant Support?

Supported by a grant from the National Science Foundation EPSCoR Program (MADE in SC)

Start Date

12-4-2019 2:15 PM

End Date

April 2019

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Apr 12th, 2:15 PM Apr 12th, 4:15 PM

Thin Films of Cu-Doped CdS Prepared by a Pulsed Cathodic Deposition Method in Dimethylsulfoxide

Richardson Ballroom – DiGiorgio Campus Center

Thin films of copper-doped CdS were prepared on conductive oxide substrates (FTO) by application of a cathodic current in an electrolyte bath of Cd2+, Cu2+, complexing agents, and S(0) in DMSO at elevated temperature with a duty cycle of 20%. Film thickness was controlled via the number of pulses and later confirmed by profilometry analysis. P-type conductivity was confirmed by open-circuit and Mott–Schottky analyses. Furthermore, the photoactivity of the films was assessed in neutral media using a three-electrode setup. By depositing this material onto the surface of a p-type oxygen-evolving catalyst (OEC) with suitable band structure, a z-scheme photocatalytic device can be produced and employed for water splitting.