Berlin 2018 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 46: Poster Session IV
CPP 46.6: Poster
Mittwoch, 14. März 2018, 11:00–13:00, Poster A
Influence of hole selective contacts in inverted perovskite solar cells — •Katrin Hirselandt1, Aniela Czudek1, Celline Awino2, Steffen Braunger1, Carolin Rehermann1, Thomas Dittrich2, and Eva Unger1 — 1Helmholtz-Zentrum Berlin, Young Investigator Group Hybrid Materials Formation and Scaling, Berlin, 12489, Germany — 2Helmholtz-Zentrum Berlin, Institute Silicon Photovoltaics, Berlin, 12489 Berlin, Germany
Planar solution processed perovskite solar cells have reached efficiencies above 20 % and their stability have improved during the past years [1,2]. In device preparation, reproducibility is a major obstacle due to perovskite absorber inhomogeneity and interfacial properties [3].
In this study we investigated four different types of planar inverted perovskite solar cells, comparting the cesium-containing triple cation perovskite with the archeotypical methylammonium lead iodide (MAPI) as absorber materials as well as two different hole transporting materials (HTMs): Poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine] (PTAA) and Poly(3,4-ethylendioxxythiophene) polystyrene (PEDOT:PSS) as selective contact layer.
The best and most reproducible performance of 16 % on average was achieved for MAFACs on PTAA. These devices also exhibited the least photocurrent hysteresis and are hence the most robust and reproducible architecture tested.
[1] K. A. Bush et al., Nature Energy (2017), 2, 17009 [2] M. A. Green et al., Prog. Photovoltaics (2017), 25, 3-13 [3] C. Bi et al., Nature Communications (2015), 6, 7747