Table of Contents
Nanomaterials, Volume 9, Issue 9 (September 2019) – 162 articles
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Cover Story (view full-size image) In the photovoltaic field, recent advances were linked to the application of porous TiO2 in [...] Read more. In the photovoltaic field, recent advances were linked to the application of porous TiO2 in perovskite solar cell (PSC) architectures with efficiency that consequently went up strikingly rapidly. We created a blend between a TiO2 sponge with bimodal porosity and a photo-active Methyl-Ammonium Lead Iodide (MAPbI3) perovskite. At the early stages of the TiO2 sponge growth, 5–10 nm-large auto-seeds are formed followed by their aggregation into meso-structures through a shadowed grazing Ti flux coupled with its local oxidation (Gig-Lox). Tomographic synchrotron radiation coherent X-ray-imaging and environmental ellipsometric porosimetry have highlighted the distributions of pore size before (>47%V), after MAPbI3 loading and after blend ageing, unfolding a starting pore filling >80%V. The demonstrated interpenetration capability and stability of the blend address its advantageous use in PSCs. View this paper.