%0 Conference Paper
%A Welter, Katharina
%A Becker, Jan Philipp
%A Jaegermann, Wolfram
%A Finger, Friedhelm
%A Smirnov, Vladimir
%T Effects of varied illumination on the performance of solar water splitting systems and evaluation of annual hydrogen generation
%M FZJ-2022-00429
%D 2021
%X 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
%B E-MRS Fall Meeting 2021
%C 20 Sep 2021 - 23 Sep 2021, virtual (Poland)
Y2 20 Sep 2021 - 23 Sep 2021
M2 virtual, Poland
%F PUB:(DE-HGF)6
%9 Conference Presentation
%U https://juser.fz-juelich.de/record/905137