Inkjet printing Ag-TiO2 thin films with suppressed photoluminescenceShow others and affiliations
2019 (English)In: Semiconductor Science and Technology, ISSN 0268-1242, E-ISSN 1361-6641, Vol. 34, no 10, article id 105027Article in journal (Refereed) Published
Abstract [en]
With ultraviolet sensitive photochemistry and photoelectric properties, TiO2 is attractive for applications like photocatalysis, photovoltaic devices, and sunscreen products, among others. By coating Ag on TiO2 surface, the sensitivity can be extended to visible light, endowing enhanced properties with potential new applications. In this work we inkjet print Ag-TiO2 films from particle suspensions, and investigate the structure, morphology, Ag distribution and the photoluminescence of the films It is found that Ag nanoparticles form bridges among TiO2 particles during the post-annealing. These metallic bridges can transport the excited electrons and suppress the recombination of electrons and holes with the photoluminescence of the film reduced by more than half. The work provides an industrial applicable, low-cost, environment friendly route of preparing Ag-TiO2 films for attractive photochemistry and photoelectric device applications.
Place, publisher, year, edition, pages
IOP PUBLISHING LTD , 2019. Vol. 34, no 10, article id 105027
Keywords [en]
Ag-TiO2, inkjet printing, photoluminescence, annealing
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-262779DOI: 10.1088/1361-6641/ab3d77ISI: 000488008800006Scopus ID: 2-s2.0-85073218570OAI: oai:DiVA.org:kth-262779DiVA, id: diva2:1362999
Note
QC 20191022
2019-10-222019-10-222022-12-06Bibliographically approved