DataVXACS NanoPaper
journal article·2019-02-05

Fully Printed Infrared Photodetectors from PbS Nanocrystals with Perovskite Ligands

AmirAbbas YousefiAmin, Niall A. Killilea, Mykhailo Sytnyk, Philipp Maisch, Ka Cheong Tam, Hans-Joachim Egelhaaf, Stefan Langner, Tobias Stubhan, Christoph J. Brabec, Tobias Rejek, Marcus Halik, Katharina Poulsen, Jan Niehaus, Anton Köck, Wolfgang Heiss

ACS Nano
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Abstract

Colloidal nanocrystals from PbS are successfully applied in highly sensitive infrared photodetectors with various device architectures. Here, we demonstrate all-printed devices with high detectivity (∼1012 cm Hz1/2/W) and a cut-off frequency of >3 kHz. The low material consumption (<0.3 mg per detector) and short processing time (14 s per detector) enabled by the automated printing promises extremely low device costs. To enable all-printed devices, an ink formulation was developed based on nanocrystals stabilized by perovskite-like methylammonium iodobismuthate ligands, which are dispersed in a ternary solvent. Fully inkjet printed devices based on this solvent were achieved with printed silver electrodes and a ZnO interlayer. Considerable improvements were obtained by the addition of small amounts of the polymer poly(vinylpyrrolidone) to the ink. The polymer improved the colloidal stability of the ink and its film-formation properties and thus enabled the scalable printing of single detectors and detector arrays. While photoconductors were shown here, the developed ink will certainly find application in a series of further electronic devices based on nanocrystals from a broad range of materials.
Source: openalex_inverted_index · Quality: baseline

Research context

PolymersNanomaterialsElectronic materials

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

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

Affiliations

Institute - Materials for Electronics and Energy Technology, Department of Materials Science and Engineering, Friedrich-Alexander-Universität Erlangen-Nürnberg, Energy Campus Nürnberg, Fürtherstraße 250, D-90429 Nürnberg, Germany

Institute - Materials for Electronics and Energy Technology, Department of Materials Science and Engineering, Friedrich-Alexander-Universität Erlangen-Nürnberg, Martensstraße 7, D-91058 Erlangen, Germany

Bavarian Center for Applied Energy Research (ZAE Bayern), Energy Campus Nürnberg, Fürther Straße 250, D-90429 Nürnberg, Erlangen Germany

Institute of Polymer Materials, Department of Materials Science and Engineering, Friedrich-Alexander-University Erlangen-Nürnberg, Martensstrasse 7, D-91058 Erlangen, Germany

Centrum für Angewandte Nanotechnologie (CAN) GmbH i. L., Grindelallee 117, D-20146 Hamburg, Germany

Materials Center Leoben Forschung GmbH, Roseggerstraße 12, A-8700 Leoben, Austria

Funding

?sterreichische Forschungsf?rderungsgesellschaft · Deutsche Forschungsgemeinschaft · State of Bawaria

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