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A measurement system for photoelectrochemical processes with high quality irradiation, temperature control and automated gas analysis
  • +3
  • David Adner,
  • Lorenz Pfordte,
  • Milan Selle,
  • Max Pohl,
  • Marko Turek,
  • Christian Hagendorf
David Adner
Fraunhofer-Center fur Silizium-Photovoltaik CSP
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Lorenz Pfordte
Fraunhofer-Center fur Silizium-Photovoltaik CSP
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Milan Selle
Fraunhofer-Center fur Silizium-Photovoltaik CSP
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Max Pohl
Fraunhofer-Center fur Silizium-Photovoltaik CSP
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Marko Turek
Fraunhofer-Center fur Silizium-Photovoltaik CSP
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Christian Hagendorf
Fraunhofer-Center fur Silizium-Photovoltaik CSP

Corresponding Author:christian.hagendorf@csp.fraunhofer.de

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Abstract

In this Application Note, a versatile and reliable measurement system for photoelectrochemical investigations is described which aims to assist scientists in obtaining reproducible photoelectrochemical data of high quality, including the solar-to-hydrogen (STH) efficiency. Specifically, it addresses the parameters irradiation quality, reaction temperature and gas measurement. The setup is designed to exclude stray light and uses a solar-grade mirror to reflect the light of a vertical solar simulator on the electrochemical cell. The light quality in the setup (»AAA«, IEC 60904-9) is close to the classification of the solar simulator itself. The temperature in the electrochemical cell is controlled with an external Peltier element and can be kept constant in the range of 20–45 °C. The influence of reaction temperature on the photocurrent of a WO 3 photoanode is demonstrated. The gaseous reaction products are analyzed with a mobile gas chromatograph, using an automated measurement routine with discontinuous sampling from the electrochemical cell. The system is applied to determine the Faraday and STH efficiencies of a copper indium gallium selenide photocathode.
03 Mar 2023Submitted to Applied Research
03 Mar 2023Submission Checks Completed
03 Mar 2023Assigned to Editor
03 Mar 2023Reviewer(s) Assigned
21 Mar 2023Review(s) Completed, Editorial Evaluation Pending
25 Mar 2023Editorial Decision: Revise Major
24 May 20231st Revision Received
24 May 2023Submission Checks Completed
24 May 2023Assigned to Editor
24 May 2023Reviewer(s) Assigned
04 Jun 2023Review(s) Completed, Editorial Evaluation Pending
04 Jun 2023Editorial Decision: Accept