DataVXACS Applied Energy MaterialsPaper
journal article·2019-12-23Open access

Adjusting Interfacial Chemistry and Electronic Properties of Photovoltaics Based on a Highly Pure Sb2S3 Absorber by Atomic Layer Deposition

Pascal Büttner, Florian Scheler, Craig Pointer, Dirk Döhler, Maïssa K. S. Barr, Aleksandra Koroleva, Dmitrii Pankin, Ruriko Hatada, Stefan Flege, Alina Manshina, Elizabeth R. Young, Ignacio Mínguez-Bacho, Julien Bachmann

ACS Applied Energy Materials· Volume 2· Issue 12
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Abstract

The combination of oxide and heavier chalcogenide layers in thin film photovoltaics suffers limitations associated with oxygen incorporation and sulfur deficiency in the chalcogenide layer or with a chemical incompatibility which results in dewetting issues and defect states at the interface. Here, we establish atomic layer deposition (ALD) as a tool to overcome these limitations. ALD allows one to obtain highly pure Sb2S3 light absorber layers, and we exploit this technique to generate an additional interfacial layer consisting of 1.5 nm ZnS. This ultrathin layer simultaneously resolves dewetting and passivates defect states at the interface. We demonstrate via transient absorption spectroscopy that interfacial electron recombination is one order of magnitude slower at the ZnS-engineered interface than hole recombination at the Sb2S3/P3HT interface. The comparison of solar cells with and without oxide incorporation in Sb2S3, with and without the ultrathin ZnS interlayer, and with systematically varied Sb2S3 thickness provides a complete picture of the physical processes at work in the devices.
Source: europepmc · Quality: candidate unverified · Source record ↗

Research context

Electronic materialsMaterials processing

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

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

Affiliations

Chemistry of Thin Film Materials, Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nürnberg, IZNF, Cauerstr. 3, Erlangen 91058, Germany

Department of Chemistry, Lehigh University, 6 East Packer Avenue, Bethlehem, Pennsylvania 18015, United States

Centre for Physical Methods of Surface Investigation, St. Petersburg State University, St. Petersburg 198504, Russia

Centre for Optical and Laser Materials Research, St. Petersburg State University, St. Petersburg 199034, Russia

Materials Analysis, Department of Materials Science, Technische Universität Darmstadt, Alarich-Weiss-Str. 2, Darmstadt 64287, Germany

Institute of Chemistry, Saint-Petersburg State University, Universitetskii pr. 26, St. Petersburg 198504, Russia

Funding

H2020 Marie Sklodowska-Curie Actions · H2020 European Research Council

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