TY  - JOUR
AU  - Turan, Bugra
AU  - Becker, Jan-Philipp
AU  - Urbain, Félix
AU  - Finger, Friedhelm
AU  - Rau, Uwe
AU  - Haas, Stefan
TI  - Upscaling of integrated photoelectrochemical water-splitting devices to large areas
JO  - Nature Communications
VL  - 7
SN  - 2041-1723
CY  - London
PB  - Nature Publishing Group
M1  - FZJ-2016-05161
SP  - 12681
PY  - 2016
AB  - Photoelectrochemical water splitting promises both sustainable energy generation and energy storage in the form of hydrogen. However, the realization of this vision requires laboratory experiments to be engineered into a large-scale technology. Up to now only few concepts for scalable devices have been proposed or realized. Here we introduce and realize a concept which, by design, is scalable to large areas and is compatible with multiple thin-film photovoltaic technologies. The scalability is achieved by continuous repetition of a base unit created by laser processing. The concept allows for independent optimization of photovoltaic and electrochemical part. We demonstrate a fully integrated, wireless device with stable and bias-free operation for 40 h. Furthermore, the concept is scaled to a device area of 64 cm2 comprising 13 base units exhibiting a solar-to-hydrogen efficiency of 3.9%. The concept and its successful realization may be an important contribution towards the large-scale application of artificial photosynthesis.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000385380100001
C6  - pmid:27601181
DO  - DOI:10.1038/ncomms12681
UR  - https://juser.fz-juelich.de/record/819518
ER  -