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- Title
Macroporosity Enhancement of Scaffold Oxide Layers Using Self‐Assembled Polymer Beads for Photovoltaic Applications.
- Authors
Yasaroglu, Kubra; Aydemir, Sinem; Chacko, Sijo; Mastroianni, Simone; Schmerber, Guy; Colis, Silviu; Rehspringer, Jean‐Luc; Slaoui, Abdelilah; Hinsch, Andreas; Dinia, Aziz
- Abstract
Molding of a dense film of spherical poly(acrylate/methyl methacrylate) (PAA‐PMMA) beads is used as unique templating agent to obtain TiO2 scaffold layers with controlled porosity. The porosity obtained is of hundreds of nanometers, much larger than the one typically reported for the porous layers of Grätzel‐ or perovskite‐ type cells. It is shown that the film thickness and roughness, and the pore size are strongly dependent on the roughness of the substrate for identical deposition conditions. In order enhance the conductivity of the TiO2 scaffold layer, a sol‐gel mixture of titanium and tin is also successfully tested. Such films are potentially interesting as electron transport layer in perovskite solar cells since they allow an enhanced specific surface and a better control of the interface with the infiltrated photoactive material which are essential for an efficient charge collection.
- Subjects
PHOTOVOLTAIC power systems; METHYL methacrylate; SCAFFOLDING; PEROVSKITE; ELECTRON transport; SOLAR cells
- Publication
Physica Status Solidi. A: Applications & Materials Science, 2018, Vol 215, Issue 17, p1
- ISSN
1862-6300
- Publication type
Article
- DOI
10.1002/pssa.201700946