journal article·2023-08-11Open access

Mitigating the Heterointerface Driven Instability in Perovskite Photovoltaics

Anurag Krishna, Viktor Škorjanc, Mathias Dankl, Jeremy Hieulle, Himanshu Phirke, Ajay Singh, Essa A. Alharbi, Hong Zhang, Felix Eickemeyer, Shaik M. Zakeeruddin, G. N. Manjunatha Reddy, Alex Redinger, Ursula Rothlisberger, Michael Grätzel, Anders Hagfeldt

ACS Energy Letters· Volume 8· Issue 8

Abstract

Metal halide perovskites have the potential to revolutionize the field of photovoltaics, though limited stability has impeded commercial exploitation. The soft heterointerface between the perovskite and charge-transporting layer is one of the major bottlenecks that limits operational stability. Here, we present rationally designed molecular modulators that synergistically improve the stability of the α-FAPbI 3 -based perovskite solar cells while retaining power conversion efficiency (PCE) of 24.0% with a high open-circuit voltage ( V OC ) of ∼1.195 V. The interfacially modified photovoltaic cells exhibit high operational stability, whereby the champion device retains ∼88% of initial performance after 2000 h of maximum power point tracking at 40 °C and 1 sun illumination. The molecular origins of such enhanced stability and device performance are corroborated by multiscale characterization techniques and modeling, providing insights into the origins of performance and stability enhancements.
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Research context

OpenAlex topics: Perovskite Materials and Applications · Quantum Dots Synthesis And Properties · Chalcogenide Semiconductor Thin Films

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

Affiliations

Laboratory of Photomolecular Science, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne, Lausanne 1015, Switzerland

Laboratory of Photonics and Interfaces, École Polytechnique Fédérale de Lausanne, Lausanne 1015, Switzerland

Laboratory of Computational Chemistry and Biochemistry, École Polytechnique Fédérale de Lausanne, Lausanne 1015, Switzerland

Scanning Probe Microscopy Laboratory, Department of Physics and Materials Science, University of Luxembourg, Luxembourg City L-1511, Luxembourg

Microelectronics and Semiconductors Institute, King Abdulaziz City for Science and Technology (KACST), Riyadh 11442, Saudi Arabia

Shanghai Frontiers Science Research Base of Intelligent Optoelectronics and Perception, Institute of Optoelectronics, Fudan University, Shanghai 200433, China

University of Lille, CNRS, Centrale Lille Institut, Univ. Artois, UMR 8181-UCCS-Unité de Catalyse et Chimie du Solide, F-59000 Lille, France

Department of Chemistry − Ångström Laboratory, Uppsala University, 75120 Uppsala, Sweden

Funding

Schweizerischer Nationalfonds zur F?rderung der Wissenschaftlichen Forschung · Fonds National de la Recherche Luxembourg · H2020 Marie Sklodowska-Curie Actions

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