Speaker
Mr
Johannes Schlipf
(TU München, LS Funktionelle Materialien E13 (Peter Müller-Buschbaum))
Description
Perovskite solar cells offer the opportunity of easy and potentially cheap processing techniques very comparable to other next generation solar cell such as organic and dye-sensitized solar cells. In addition, the optimization of preparation routines has led to power conversion efficiencies (PCE) of over 15 % for solution processed devices. Device performance, however, is strongly linked to film morphology which in turn depends on the applied preparation protocol.
In our present work we have prepared perovskite thin films with an established 2-step synthesis method. We have investigated precursor and perovskite film with GISAXS and observe a strong correlation of lateral crystal sizes before and after conversion which we attribute to constrained crystal growth. Additionally, we find an accumulation of smaller crystals within the film in contrast to the surface.
Primary author
Mr
Johannes Schlipf
(TU München, LS Funktionelle Materialien E13 (Peter Müller-Buschbaum))
Co-authors
Mr
Christoph Schaffer
(TUM - Physics Dept. - Functional Materials)
Dr
Pablo Docampo
(Department of Chemistry and Center for NanoScience, LMU)
Prof.
Peter Müller-Buschbaum
(TU München, LS Funktionelle Materialien E13)
Dr
Sigrid Bernstorff
(Elettra-Sincrotrone Trieste)
