000200800 001__ 200800
000200800 005__ 20240708133711.0
000200800 037__ $$aFZJ-2015-03193
000200800 1001_ $$0P:(DE-Juel1)156469$$aUrbain, Felix$$b0$$eCorresponding Author
000200800 1112_ $$aEMRS Spring Conference$$cLille$$d2015-05-11 - 2015-05-15$$wFrance
000200800 245__ $$aEfficient multijunction thin film silicon based photocathodes for hydrogen production via photoelectrochemical water splitting
000200800 260__ $$c2015
000200800 3367_ $$0PUB:(DE-HGF)6$$2PUB:(DE-HGF)$$aConference Presentation$$bconf$$mconf$$s1432017211_25976$$xOther
000200800 3367_ $$033$$2EndNote$$aConference Paper
000200800 3367_ $$2DataCite$$aOther
000200800 3367_ $$2ORCID$$aLECTURE_SPEECH
000200800 3367_ $$2DRIVER$$aconferenceObject
000200800 3367_ $$2BibTeX$$aINPROCEEDINGS
000200800 520__ $$aWe report on the application of multijunction thin film silicon based photocathodes for solar water splitting. Multijunction solar cells allow for high photovoltages, well above the thermodynamically required 1.23 V to drive the oxygen and hydrogen evolution reactions. However, the use of such solar cells in integrated water splitting devices imposes considerable challenges, in particular at the solar cell/electrolyte interface concerning catalysis and chemical stability. In this regard, we integrate different metal layers at the solar cell/electrolyte interface and evaluate their catalytic and stability properties.The performance of the photocathodes, with respect to photocurrent densities and onset potentials for cathodic current were evaluated in a 3-electrode configuration. By using tandem, triple and quadruple junction photocathodes, the onset potentials can be tuned between 1.3 V and 2.5 V vs. RHE. We demonstrate, that the high excess-voltage allows for the substitution of precious metal catalysts, like platinum, by more abundant materials, like nickel, without impairing the device performance. The ability to provide self-contained solar water splitting over a prolonged period of time is demonstrated in a 2-electrode configuration with an impressive solar-to-hydrogen efficiency of 8.6 %.Modeling the current-voltage characteristics of the water splitting device shows good agreement with experimental results and allows for an analysis of the relevant system losses.
000200800 536__ $$0G:(DE-HGF)POF3-126$$a126 - Solar Fuels (POF3-126)$$cPOF3-126$$fPOF III$$x0
000200800 536__ $$0G:(DE-HGF)POF3-121$$a121 - Solar cells of the next generation (POF3-121)$$cPOF3-121$$fPOF III$$x1
000200800 536__ $$0G:(DE-Juel1)HITEC-20170406$$aHITEC - Helmholtz Interdisciplinary Doctoral Training in Energy and Climate Research (HITEC) (HITEC-20170406)$$cHITEC-20170406$$x2
000200800 7001_ $$0P:(DE-Juel1)130297$$aSmirnov, Vladimir$$b1
000200800 7001_ $$0P:(DE-Juel1)142337$$aBecker, Jan Philipp$$b2$$ufzj
000200800 7001_ $$0P:(DE-Juel1)143905$$aRau, Uwe$$b3
000200800 7001_ $$0P:(DE-HGF)0$$aZiegler, Jürgen$$b4
000200800 7001_ $$0P:(DE-HGF)0$$aYang, Florent$$b5
000200800 7001_ $$0P:(DE-HGF)0$$aKaiser, Bernhard$$b6
000200800 7001_ $$0P:(DE-HGF)0$$aJaegermann, Wolfram$$b7
000200800 7001_ $$0P:(DE-Juel1)130238$$aFinger, Friedhelm$$b8
000200800 773__ $$y2015
000200800 909CO $$ooai:juser.fz-juelich.de:200800$$pVDB
000200800 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)156469$$aForschungszentrum Jülich GmbH$$b0$$kFZJ
000200800 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)130297$$aForschungszentrum Jülich GmbH$$b1$$kFZJ
000200800 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)142337$$aForschungszentrum Jülich GmbH$$b2$$kFZJ
000200800 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)143905$$aForschungszentrum Jülich GmbH$$b3$$kFZJ
000200800 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)130238$$aForschungszentrum Jülich GmbH$$b8$$kFZJ
000200800 9130_ $$0G:(DE-HGF)POF2-111$$1G:(DE-HGF)POF2-110$$2G:(DE-HGF)POF2-100$$aDE-HGF$$bEnergie$$lErneuerbare Energien$$vThin Film Photovoltaics$$x0
000200800 9131_ $$0G:(DE-HGF)POF3-126$$1G:(DE-HGF)POF3-120$$2G:(DE-HGF)POF3-100$$3G:(DE-HGF)POF3$$4G:(DE-HGF)POF$$aDE-HGF$$bEnergie$$lErneuerbare Energien$$vSolar Fuels$$x0
000200800 9131_ $$0G:(DE-HGF)POF3-121$$1G:(DE-HGF)POF3-120$$2G:(DE-HGF)POF3-100$$3G:(DE-HGF)POF3$$4G:(DE-HGF)POF$$aDE-HGF$$bEnergie$$lErneuerbare Energien$$vSolar cells of the next generation$$x1
000200800 9141_ $$y2015
000200800 9201_ $$0I:(DE-Juel1)IEK-5-20101013$$kIEK-5$$lPhotovoltaik$$x0
000200800 980__ $$aconf
000200800 980__ $$aVDB
000200800 980__ $$aI:(DE-Juel1)IEK-5-20101013
000200800 980__ $$aUNRESTRICTED
000200800 981__ $$aI:(DE-Juel1)IMD-3-20101013