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Morphology Phase Diagram of Slot-Die Printed TiO2 Films Based on Sol-Gel Synthesis
Tech Univ Munich, Lehrstuhl Funkt Mat, Phys Dept, James Franck Str 1, D-85748 Garching, Germany..
Tech Univ Munich, Lehrstuhl Funkt Mat, Phys Dept, James Franck Str 1, D-85748 Garching, Germany..
Tech Univ Munich, Lehrstuhl Funkt Mat, Phys Dept, James Franck Str 1, D-85748 Garching, Germany..
Tech Univ Munich, Lehrstuhl Funkt Mat, Phys Dept, James Franck Str 1, D-85748 Garching, Germany..
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2019 (Engelska)Ingår i: Advanced Materials Interfaces, ISSN 2196-7350, Vol. 6, nr 12, artikel-id 1900558Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Mesoporous titania films with tailored nanostructures are fabricated via slot-die printing, which is a simple and cost-effective thin-film deposition technique with the possibility of a large-scale manufacturing. Based on this technique, which is favorable in industry, TiO2 films possess the similar advantage with polymer semiconducting devices like ease of large-scale production. The titania morphologies, including foam-like nanostructures, nanowire aggregates, collapsed vesicles and nanogranules, are achieved via a so-called block-copolymer-assisted sol-gel synthesis. By adjusting the weight fraction of reactants, the ternary morphology phase diagram of the printed titania films is probed after template removal. The surface and inner morphology evolutions are explored with scanning electron microscopy and grazing incidence small-angle X-ray scattering, respectively. Special focus is set on foam-like titania nanostructures as they are of especial interest for, e.g., solar cell applications. At a low weight fraction of the titania precursor titanium(IV)isopropoxide (TTIP), foam-like titania films are achieved, which exhibit a high uniformity and possess large pore sizes. The anatase phase of the highly crystalline titania films is verified with X-ray diffraction and transmission electron microscopy.

Ort, förlag, år, upplaga, sidor
WILEY , 2019. Vol. 6, nr 12, artikel-id 1900558
Nyckelord [en]
crystallinity, GISAXS, morphology phase diagram, printing, TiO2 films
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URN: urn:nbn:se:kth:diva-256285DOI: 10.1002/admi.201900558ISI: 000477979500004Scopus ID: 2-s2.0-85065237302OAI: oai:DiVA.org:kth-256285DiVA, id: diva2:1368023
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QC 20191105

Tillgänglig från: 2019-11-05 Skapad: 2019-11-05 Senast uppdaterad: 2019-11-05Bibliografiskt granskad

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Brett, CalvinRoth, Stephan V.

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