Regensburg 2019 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 45: HL Posters III

HL 45.3: Poster

Donnerstag, 4. April 2019, 18:30–21:00, Poster E

Influence of excitonic effects on charge carrier extraction in organic-inorganic perovskite solar cells — •Philip Lange1, Fabian Ruf1, Ihteaz M. Hossain2,3, Ulrich W. Paetzold2,3, Moritz Schultes4, Erik Ahlswede4, Heinz Kalt1, and Michael Hetterich1,21Institute of Applied Physics, Karlsruhe Institute of Technology (KIT), 76131 Karlsruhe, Germany — 2Light Technology Institute, KIT, 76131 Karlsruhe, Germany — 3Institute of Microstructure Technology, KIT, 76344 Eggenstein-Leopoldshafen, Germany — 4Zentrum für Sonnenenergie- und Wasserstoff-Forschung Baden-Württemberg (ZSW), 70563 Stuttgart, Germany

Organic-inorganic perovskites are among the most promising absorber materials for thin-film solar cells with reported conversion efficiencies above 23 %. However, it is still not sufficiently clear, to which degree the relatively strong excitonic effects in this material system hamper the separation of optically generated electron-hole pairs and the subsequent collection of the charge carriers. In order to elaborate this, semi-transparent solar cells employing (MA)PbI3 and Cs0.1(MA0.17FA0.83)0.9Pb(I0.83Br0.17)3 as absorbers are investigated utilizing a combination of absorption and photocurrent measurements as a function of temperature. First results will be discussed in this contribution.

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