TY - JOUR
T1 - An efficient and stable photoelectrochemical system with 9% solar-to-hydrogen conversion efficiency via InGaP/GaAs double junction.
AU - Varadhan, Purushothaman
AU - Fu, Hui-Chun
AU - Kao, Yu-Cheng
AU - Horng, Ray-Hua
AU - He, Jr-Hau
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: 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.
PY - 2019/11/21
Y1 - 2019/11/21
N2 - 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-wireless
AB - 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-wireless
UR - http://hdl.handle.net/10754/660450
UR - http://www.nature.com/articles/s41467-019-12977-x
UR - http://www.scopus.com/inward/record.url?scp=85075403788&partnerID=8YFLogxK
U2 - 10.1038/s41467-019-12977-x
DO - 10.1038/s41467-019-12977-x
M3 - Article
C2 - 31754117
SN - 2041-1723
VL - 10
JO - Nature communications
JF - Nature communications
IS - 1
ER -
