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Preparation of a TiO2 Porous Layer by Molding of Polymer Beads for Perovskite Solar Cells Application

Préparation de couches poreuses de TiO2 par moulage de billes de polymères pour des applications dans des cellules solaires à base de pérovskites
: Yasaroglu Ünal, Kübra
: Dinia, Azis; Glunz, Stefan W.; Mastroianni, Simone; Hinsch, Andreas

Volltext urn:nbn:de:0011-n-5897822 (11 MByte PDF)
MD5 Fingerprint: b3fcab47bbb011922815e97c0750ff53
Erstellt am: 19.5.2020

Strasbourg, 2019, 143 S.
Strasbourg, Univ., Diss., 2019
Dissertation, Elektronische Publikation
Fraunhofer ISE ()

The perovskite based solar cells is a new generation solar cell type, the perovskite crystals act as photo-charge-generating materials with organic and inorganic elements more commonly referred to as "halide hybrid perovskite" (ABX3 with A the organic part, B the inorganic part and X an halogen). In addition, they are low-cost materials that are easy to develop, which is a major advantage for this type of cell. There are different types of perovskite-based solar cells (PSC) with different designs. This work focuses on the so-called "monolithic" PSC configuration, which is composed of different porous layers; including TiO2 deposited from commercial pastes by "screen-printing" technique into perovskite crystals infiltrate. In this cell graphite (p type) is used as cathode while FTO (Fluorine Tin Oxide, n type) on glass is used as anode. The aim is to obtain a TiO2 layer with a higher porous volume with respect to the one done commercially, so the quantity of photo-active materials that infiltrates it can be increased and in this sense higher efficiency could be reached. Indeed, up to 13 % has been obtained for the optimized cells with the new configuration of porous TiO2 layer obtained by bead molding in comparison with a 8 % for reference cells (commercially produced porous layer). Keywords: perovskites solar cells, TiO2 porous layer, polymer beads, sol-gel method.