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Gradient dopant profiling and spectral utilization of monolithic thin-film silicon photoelectrochemical tandem devices for solar water splitting

A cost-effective and earth-abundant photocathode based on hydrogenated amorphous silicon carbide (a-SiC:H) is demonstrated to split water into hydrogen and oxygen using solar energy. A monolithic a-SiC:H photoelectrochemical (PEC) cathode integrated with a hydrogenated amorphous silicon (a-SiC:H)/na... Full description

Contained in: Journal of Materials Chemistry A Vol. 3, No. 8 (2015), p. 4155-4162
Fulltext access:
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Links: Additional Link (dx.doi.org)
ISSN: 2050-7496
Additional Keywords: BOR
CARBID
GLASSUBSTRAT
PHOTOKATHODE
SAUERSTOFF
SOLARENERGIE
STARKSTROM
STROMDICHTE
WASSERSPALTUNG
WASSERSTOFF
WASSERSTOFFDOTIERTES-AMORPHES-SILICIUM
WASSERSTOFFELEKTRODE
WASSERSTOFFENTWICKLUNG
DOI: 10.1039/c4ta05523c
Notes: Copyright: Metadaten: TEMA, Copyright WTI-Frankfurt eG
Copyright: (C) Alle Rechte beim Herausgeber
Physical Description: 8 Seiten, 40 Quellen
ID (e.g. DOI, URN): 10.1039/c4ta05523c
PPN (Catalogue-ID): WTI055264255
Note: WTI TEMA DB
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520 |a A cost-effective and earth-abundant photocathode based on hydrogenated amorphous silicon carbide (a-SiC:H) is demonstrated to split water into hydrogen and oxygen using solar energy. A monolithic a-SiC:H photoelectrochemical (PEC) cathode integrated with a hydrogenated amorphous silicon (a-SiC:H)/nano-crystalline silicon (nc-Si:H) double photovoltaic (PV) junction achieved a current density of −5.1 mA cm−2 at 0 V versus the reversible hydrogen electrode. The a-SiC:H photocathode used no hydrogen-evolution catalyst and the high current density was obtained using gradient boron doping. The growth of high quality nc-Si:H PV junctions in combination with optimized spectral utilization was achieved using glass substrates with integrated micro-textured photonic structures. The performance of the PEC/PV cathode was analyzed by simulations using Advanced Semiconductor Analysis (ASA) software. 
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