000200801 001__ 200801
000200801 005__ 20240708133711.0
000200801 037__ $$aFZJ-2015-03194
000200801 1001_ $$0P:(DE-Juel1)156469$$aUrbain, Felix$$b0$$eCorresponding Author
000200801 1112_ $$aEMRS Spring Conference$$cLille$$d2015-05-11 - 2015-05-15$$wFrance
000200801 245__ $$aEfficient multijunction thin film silicon solar cells with open-circuit voltages up to 2.8 V for the application in photoelectrochemical energy storage devices
000200801 260__ $$c2015
000200801 3367_ $$0PUB:(DE-HGF)6$$2PUB:(DE-HGF)$$aConference Presentation$$bconf$$mconf$$s1432017252_25880$$xOther
000200801 3367_ $$033$$2EndNote$$aConference Paper
000200801 3367_ $$2DataCite$$aOther
000200801 3367_ $$2ORCID$$aLECTURE_SPEECH
000200801 3367_ $$2DRIVER$$aconferenceObject
000200801 3367_ $$2BibTeX$$aINPROCEEDINGS
000200801 520__ $$aWe report on the development of multijunction solar cells for the integration in photoelectrochemical devices for hydrogen production. Hydrogen, as a storable chemical fuel, can be generated through photoelectrolysis of water, a chemical reaction which requires potentials, i.e. photovoltages over 1.8V to run autonomously. The exact voltage needed varies with the used catalysts. The photocurrent at the respective required voltage determines the solar-to-hydrogen device efficiency. It is therefore important to develop solar cells which can cover up a wide voltage (VOC and VMPP) range in combination with high photocurrents. This high photovoltage/high photocurrent tradeoff can be solved by multijunction solar cells made of amorphous (a-Si:H) and microcrystalline (μc-Si:H) silicon.We developed a-Si:H/a Si:H tandem, a Si:H/µc Si:H/µc Si:H and a Si:H/a Si:H/µc Si:H triple, and a Si:H/a Si:H/µc Si:H/µc Si:H quadruple junction solar cells. The solar cells were optimized in terms of photovoltage and photocurrent by varying the process parameters and thickness of the intrinsic absorber layers and by integrating microcrystalline silicon oxide as intermediate reflecting layers to adjust the photocurrents of the individual subcells. It was found that the electronic properties of the individual series-connected subcells can be adjusted to systematically tune the VOC between 1.9 V and 2.8 V and we achieved PV efficiencies over 11.5% for tandem and over 13.5% for triple and quadruple cells.
000200801 536__ $$0G:(DE-HGF)POF3-126$$a126 - Solar Fuels (POF3-126)$$cPOF3-126$$fPOF III$$x0
000200801 536__ $$0G:(DE-HGF)POF3-121$$a121 - Solar cells of the next generation (POF3-121)$$cPOF3-121$$fPOF III$$x1
000200801 536__ $$0G:(DE-Juel1)HITEC-20170406$$aHITEC - Helmholtz Interdisciplinary Doctoral Training in Energy and Climate Research (HITEC) (HITEC-20170406)$$cHITEC-20170406$$x2
000200801 7001_ $$0P:(DE-Juel1)130297$$aSmirnov, Vladimir$$b1$$ufzj
000200801 7001_ $$0P:(DE-Juel1)142337$$aBecker, Jan Philipp$$b2$$ufzj
000200801 7001_ $$0P:(DE-Juel1)130263$$aLambertz, Andreas$$b3$$ufzj
000200801 7001_ $$0P:(DE-Juel1)143905$$aRau, Uwe$$b4$$ufzj
000200801 7001_ $$0P:(DE-Juel1)130238$$aFinger, Friedhelm$$b5$$ufzj
000200801 773__ $$y2015
000200801 909CO $$ooai:juser.fz-juelich.de:200801$$pVDB
000200801 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)156469$$aForschungszentrum Jülich GmbH$$b0$$kFZJ
000200801 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)130297$$aForschungszentrum Jülich GmbH$$b1$$kFZJ
000200801 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)142337$$aForschungszentrum Jülich GmbH$$b2$$kFZJ
000200801 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)130263$$aForschungszentrum Jülich GmbH$$b3$$kFZJ
000200801 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)143905$$aForschungszentrum Jülich GmbH$$b4$$kFZJ
000200801 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)130238$$aForschungszentrum Jülich GmbH$$b5$$kFZJ
000200801 9130_ $$0G:(DE-HGF)POF2-111$$1G:(DE-HGF)POF2-110$$2G:(DE-HGF)POF2-100$$aDE-HGF$$bEnergie$$lErneuerbare Energien$$vThin Film Photovoltaics$$x0
000200801 9131_ $$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$$x0
000200801 9131_ $$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$$x1
000200801 9141_ $$y2015
000200801 9201_ $$0I:(DE-Juel1)IEK-5-20101013$$kIEK-5$$lPhotovoltaik$$x0
000200801 980__ $$aconf
000200801 980__ $$aVDB
000200801 980__ $$aI:(DE-Juel1)IEK-5-20101013
000200801 980__ $$aUNRESTRICTED
000200801 981__ $$aI:(DE-Juel1)IMD-3-20101013