DataVXACS Energy LettersPaper
journal article·2023-06-09

Light Makes Right: Laser Polishing for Surface Modification of Perovskite Solar Cells

Mayank Kedia, Monika Rai, Himanshu Phirke, Clara A Aranda, Chittaranjan Das, Vladimir Chirvony, Stephan Boehringer, Małgorzata Kot, Mahdi Malekshahi Byranvand, Jan Ingo Flege, Alex Redinger, Michael Saliba

ACS Energy Letters· Volume 8· Issue 6
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Source abstract

Abstract

Interface engineering is a common strategy for passivating surface defects to attain open circuit voltages ( V oc ) in perovskite solar cells (PSCs). In this work, we introduce the concept of polishing a perovskite thin-film surface using a nanosecond (ns) pulsed ultraviolet laser to reduce surface defects, such as dangling bonds, undesirable phases, and suboptimal stoichiometry. A careful control of laser energy and scanning speed improves the photophysical properties of the surface without compromising the thickness. Using laser polishing, a V oc of 1.21 V is achieved for planar PSCs with a triple cation composition, showing an improved perovskite/hole transport interface by mitigating surface recombination losses. We measure an efficiency boost from 18.0% to 19.3% with improved stability of up to 1000 h. The results open the door to a new class of surface modification using lasers for interface passivation in well-controllable, automated, scalable, and solvent-free surface treatments.
Source: openalex_inverted_index · Quality: baseline

Research context

NanomaterialsElectronic materials

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

Institute for Photovoltaics (ipv), University of Stuttgart, Pfaffenwaldring 47, 70569 Stuttgart, Germany

Helmholtz Young Investigator Group, IEK5-Photovoltaik, Forschungszentrum Jülich, 52425 Jülich, Germany

Department of Physics and Materials Science, University of Luxembourg, L-1511 Esch-sur-Alzette, Luxembourg

Instituto de Ciencia de Materiales (ICMUV), Universidad de Valencia, Paterna, Valencia 46980, Spain

Chair of Applied Physics and Semiconductor Spectroscopy, Brandenburg University of Technology Cottbus-Senftenberg, Konrad-Zuse-Straße 1, 03046 Cottbus, Germany

Funding

Ministerio de Econom??a y Competitividad · Fonds National de la Recherche Luxembourg · Deutsche Forschungsgemeinschaft · Bundesministerium f??r Wirtschaft und Energie · Ministry of Energy, Israel · European Commission · Alexander von Humboldt-Stiftung · Bundesministerium f??r Wirtschaft und Energie, Zentrales Innovationsprogramm Mittelstand · ProperPhotoMile · Helmholtz Young Investigator Group FRONTRUNNER

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