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

Chemistry, Physics, Geology, & the Environment

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.