Effects of varied illumination on the performance of solar water splitting systems and evaluation of annual hydrogen generation
Effects of varied illumination on the performance of solar water splitting systems and evaluation of annual hydrogen generation
We study the effects of simulated outdoor illumination conditions on the performance of photovoltaic-biased electrosynthetic (PV?EC) systems used for the generation of hydrogen by means of solar water splitting. An integrated PV-EC cell consists of a photovoltaic cell (PV) directly combined with an...
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Personal Name(s): | Welter, Katharina (Corresponding author) |
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Becker, Jan Philipp / Jaegermann, Wolfram / Finger, Friedhelm / Smirnov, Vladimir (Corresponding author) | |
Contributing Institute: |
Photovoltaik; IEK-5 |
Imprint: |
2021
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Conference: | E-MRS Fall Meeting 2021, virtual (Poland), 2021-09-20 - 2021-09-23 |
Document Type: |
Conference Presentation |
Research Program: |
Solar cells of the next generation |
Publikationsportal JuSER |
We study the effects of simulated outdoor illumination conditions on the performance of photovoltaic-biased electrosynthetic (PV?EC) systems used for the generation of hydrogen by means of solar water splitting. An integrated PV-EC cell consists of a photovoltaic cell (PV) directly combined with an electrolysis cell (EC), where the chemical reactions take place. In the present work, multijunction silicon based solar cells [1] were implemented for the PV part of the device together with an EC cell using a Pt/IrOx catalyst system. Annual variations in the solar illumination spectra influence the device performance together with long-term energy conversion. Both PV device and PV-EC device performance under varied spectral conditions differ from the performance obtained under standard AM1.5G illumination. Our model accounts for annual spectral changes in illumination and predicts the long-term (1 year) performance of PV?EC systems in terms of the hydrogen amount produced for a given geographical location for various types of multijunction photovoltaic systems (tandem, triple, and quadruple junctions). [1] F. Urbain, V. Smirnov, J.P. Becker et al, Energy Env. Sci. 2016, 9, 145?154 [2] K. Welter et al, Energy Fuels 2021, 35, 1, 839-846 |