DataVXACS Energy LettersPaper
journal article·2021-03-12

Large-Grain Double Cation Perovskites with 18 μs Lifetime and High Luminescence Yield for Efficient Inverted Perovskite Solar Cells

Emilio Gutierrez-Partida, Hannes Hempel, Sebastián Caicedo-Dávila, Meysam Raoufi, Francisco Peña-Camargo, Max Grischek, René Gunder, Jonas Diekmann, Pietro Caprioglio, Kai O. Brinkmann, Hans Köbler, Steve Albrecht, Thomas Riedl, Antonio Abate, Daniel Abou-Ras, Thomas Unold, Dieter Neher, Martin Stolterfoht

ACS Energy Letters· Volume 6· Issue 3
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Source abstract

Abstract

Recent advancements in perovskite solar cell performance were achieved by stabilizing the α-phase of FAPbI3 in nip-type architectures. However, these advancements could not be directly translated to pin-type devices. Here, we fabricated a high-quality double cation perovskite (MA0.07FA0.93PbI3) with low bandgap energy (1.54 eV) using a two-step approach on a standard polymer (PTAA). The perovskite films exhibit large grains (∼1 μm), high external photoluminescence quantum yields of 20%, and outstanding Shockley–Read–Hall carrier lifetimes of 18.2 μs without further passivation. The exceptional optoelectronic quality of the neat material was translated into efficient pin-type cells (up to 22.5%) with improved stability under illumination. The low-gap cells stand out by their high fill factor (∼83%) due to reduced charge transport losses and short-circuit currents >24 mA cm–2. Using intensity-dependent quasi-Fermi level splitting measurements, we quantify an implied efficiency of 28.4% in the neat material, which can be realized by minimizing interfacial recombination and optical losses.
Source: openalex_inverted_index · Quality: baseline

Research context

PolymersElectronic materials

OpenAlex topics: Perovskite Materials and Applications · Organic Light-Emitting Diodes Research · Quantum Dots Synthesis And Properties

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Institute of Physics and Astronomy, University of Potsdam, Karl-Liebknecht-Str. 24-25, D-14476 Potsdam-Golm, Germany

Department of Structure and Dynamics of Energy Materials, Helmholtz-Zentrum-Berlin, Hahn-Meitner-Platz 1, D-14109 Berlin, Germany

Young Investigator Group Perovskite Tandem Solar Cells, Helmholtz-Zentrum Berlin fur Materialien und Energie GmbH, Kekulestrase 5, Berlin 12489, Germany

Clarendon Laboratory, Department of Physics, University of Oxford, Oxford OX1 3PU, United Kingdom

Institute of Electronic Devices and Wuppertal Center for Smart Materials & Systems, University of Wuppertal, 42119 Wuppertal, Germany

Young Investigator Group Active Materials and Interfaces for Stable Perovskite Solar Cells, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Kekulestrase 5, 12489 Berlin, Germany

Funding

Universit??t Potsdam · Deutsche Forschungsgemeinschaft · Bundesministerium f??r Wirtschaft und Energie · Helmholtz International Research School HI-SCORE · Helmholtz-Zentrum Berlin f??r Materialien und Energie

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