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000095551 1001_ $$aRawolle, M.
000095551 1101_ $$aDESY$$bExperiments with synchrotron radiation
000095551 245__ $$aNanostructuring of titania thin films by combination of micro-fluidics and block copolymer based sol-gel templating
000095551 260__ $$aWeinheim$$bWiley-VCH Verl.$$c2011
000095551 300__ $$a884-891
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000095551 500__ $$3Converted on 2013-05-30 15:19
000095551 500__ $$3Converted on 2013-06-21 19:21
000095551 520__ $$aSol-gel templating of titania thin films with the amphiphilic diblock copolymer poly(dimethyl siloxane)-block-methyl methacrylate poly(ethylene oxide) is combined with microfluidic technology to control the structure formation. Due to the laminar flow conditions in the microfluidic cell, a better control of the local composition of the reactive fluid is achieved. The resulting titania films exhibit mesopores and macropores, as determined with scanning electron microscopy, X-ray reflectivity, and grazing incidence small angle X-ray scattering. The titania morphology has three features that are beneficial for application in photovoltaics: 1) a large surface-to-volume ratio important for charge generation with disordered hexagonally arranged mesopores of 25 nm size and a film porosity of up to 0.79, 2) enhanced light scattering that enables the absorption of more light, and 3) a dense titania layer with a thickness of about 6 nm at the substrate (bottom electrode) to prevent short circuits. An optical characterization complements the structural investigation.
000095551 536__ $$0G:(DE-H253)POF2-BW4-20130405$$aDORIS Beamline BW4 (POF2-54G13)$$cPOF2-54G13$$fPOF II$$x0
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000095551 650_2 $$2MeSH$$aMicrofluidics
000095551 650_2 $$2MeSH$$aMicroscopy, Electron, Scanning
000095551 650_2 $$2MeSH$$aNanostructures: chemistry
000095551 650_2 $$2MeSH$$aPhase Transition
000095551 650_2 $$2MeSH$$aPolymers: chemistry
000095551 650_2 $$2MeSH$$aPorosity
000095551 650_2 $$2MeSH$$aSurface Properties
000095551 650_2 $$2MeSH$$aTitanium: chemistry
000095551 650_2 $$2MeSH$$aX-Rays
000095551 650_7 $$00$$2NLM Chemicals$$aPolymers
000095551 650_7 $$015FIX9V2JP$$2NLM Chemicals$$atitanium dioxide
000095551 650_7 $$07440-32-6$$2NLM Chemicals$$aTitanium
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000095551 7001_ $$aRuderer, M. A.
000095551 7001_ $$aPrams, S. M.
000095551 7001_ $$aZhong, Q.
000095551 7001_ $$aMagerl, D.
000095551 7001_ $$aPerlich, J.
000095551 7001_ $$aRoth, S. V.
000095551 7001_ $$aLellig, P.
000095551 7001_ $$aGutmann, J. S.
000095551 7001_ $$aMüller-Buschbaum, P.
000095551 773__ $$0PERI:(DE-600)2168935-0$$a10.1002/smll.201001734$$gVol. 7, p. 884-891$$p884-891$$q7<884-891$$tSmall$$v7$$x1613-6829$$y2011
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000095551 9141_ $$y2011
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000095551 920_1 $$iExperiments with synchrotron radiation$$kHASYLAB
000095551 9201_ $$0I:(DE-H253)HASYLAB_-2012_-20130307$$kHASYLAB$$lExperiments with synchrotron radiation$$x0
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