Regensburg 2016 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 11: Poster: Hybrid and Perovskite Photovoltaics
CPP 11.2: Poster
Montag, 7. März 2016, 18:15–21:00, Poster B2
Crystallization behavior of hybrid perovskite films on mesoporous titania templates — •Markus Trunk, Bo Su, and Peter Müller-Buschbaum — TU München, Physik-Department, LS Funktionelle Materialien, 85748 Garching, Germany
The tremendous efficiency improvement in organic-inorganic halide perovskite solar cells has attracted very high interest in the last years. Comparing the stability of methylammonium lead halide materials, methylammonium lead bromide (MAPbBr3) is a promising candidate. To increase the device performance with respect to the hysteresis in current-voltage characteristics, we use mesoporous titania films as support layer for the perovskite. We manufactured nanostructured titania films with an additional superstructure in the micrometer-regime. The superstructure was first transferred to a silicon chip via optical lithography. Then, a PDMS stamp was used as a replica of this master stamp and the superstructure was superimposed to the mesoporous titania films via a wet imprinting method. The morphology of wet imprint films is probed by SEM and AFM. The perovskite films are prepared via a one-step method on top of the superstructured mesoporous titania layers. Electronic properties, optical properties and crystalline structure are characterized for these samples.