An efficient and stable photoelectrochemical system with 9% solar-to-hydrogen conversion efficiency via InGaP/GaAs double junction.
Type
ArticleKAUST Department
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) DivisionElectrical Engineering Program
KAUST Solar Center (KSC)
Date
2019-11-21Online Publication Date
2019-11-21Print Publication Date
2019-12Permanent link to this record
http://hdl.handle.net/10754/660450
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Despite III-V semiconductors demonstrating extraordinary solar-to-hydrogen (STH) conversion efficiencies, high cost and poor stability greatly impede their practical implementation in photoelectrochemical (PEC) water splitting applications. Here, we present a simple and efficient strategy for III-V-based photoelectrodes that functionally and spatially decouples the light harvesting component of the device from the electrolysis part that eliminates parasitic light absorption, reduces the cost, and enhances the stability without any compromise in efficiency. The monolithically integrated PEC cell was fabricated by an epitaxial lift-off and transfer of inversely grown InGaP/GaAs to a robust Ni-substrate and the resultant photoanode exhibits an STH efficiency of ~9% with stability ~150 h. Moreover, with the ability to access both sides of the device, we constructed a fully-integrated, unassisted-wirelessCitation
Varadhan, P., Fu, H.-C., Kao, Y.-C., Horng, R.-H., & He, J.-H. (2019). An efficient and stable photoelectrochemical system with 9% solar-to-hydrogen conversion efficiency via InGaP/GaAs double junction. Nature Communications, 10(1). doi:10.1038/s41467-019-12977-xSponsors
J.H.H. greatly acknowledges the baseline funding from King Abdullah University of Science and Technology (KAUST) and the seed funding from the KAUST Solar Center. P.V. greatly acknowledges Vinoth Ramalingam and Maolin Zhang for helpful discussions.Publisher
Springer NatureJournal
Nature communicationsAdditional Links
http://www.nature.com/articles/s41467-019-12977-xhttps://www.nature.com/articles/s41467-019-12977-x.pdf
ae974a485f413a2113503eed53cd6c53
10.1038/s41467-019-12977-x
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Except where otherwise noted, this item's license is described as Archived with thanks to Nature communications