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Correlative In Situ Multichannel Imaging for Large-Area Monitoring of Morphology Formation in Solution-Processed Perovskite Layers

Ternes, Simon 1,2; Laufer, Felix 1; Scharfer, Philip 3; Schabel, Wilhelm 3; Richards, Bryce S. ORCID iD icon 1,2; Howard, Ian A. 1,2; Paetzold, Ulrich W. ORCID iD icon 1,2
1 Lichttechnisches Institut (LTI), Karlsruher Institut für Technologie (KIT)
2 Institut für Mikrostrukturtechnik (IMT), Karlsruher Institut für Technologie (KIT)
3 Karlsruher Institut für Technologie (KIT)


To scale up production of perovskite photovoltaics, state-of-the-art laboratory recipes and processes must be transferred to large-area coating and drying systems. The development of in situ monitoring methods that provide real-time feedback for process control is pivotal to overcome this challenge. Herein, correlative in situ multichannel imaging (IMI) obtaining reflectance, photoluminescence intensity, and central photoluminescence emission wavelength images on areas larger than 100 cm2 with subsecond temporal resolution using a simple, cost-effective setup is demonstrated. Installed on top of a drying channel with controllable laminar air flow and substrate temperature, IMI is shown to consistently monitor solution film drying, perovskite nucleation, and perovskite crystallization. If the processing parameters differ, IMI reveals characteristic changes in large-area perovskite formation dynamics already before the final annealing step. Moreover, when IMI is used to study >130 blade-coated devices processed at the same parameters, about 90% of low-performing devices contain coating inhomogeneities detected by IMI. The results demonstrate that IMI should be of value for real-time 2D monitoring and feedback control in industrial-scale, high-throughput fabrication such as roll-to-roll printing.

Verlagsausgabe §
DOI: 10.5445/IR/1000137861
Veröffentlicht am 17.11.2021
DOI: 10.1002/solr.202100353
Zitationen: 5
Web of Science
Zitationen: 4
Zitationen: 5
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Mikrostrukturtechnik (IMT)
Institut für Thermische Verfahrenstechnik (TVT)
Universität Karlsruhe (TH) – Interfakultative Einrichtungen (Interfakultative Einrichtungen)
Karlsruhe School of Optics & Photonics (KSOP)
Lichttechnisches Institut (LTI)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 03.2022
Sprache Englisch
Identifikator ISSN: 2367-198X, 2367-198X
KITopen-ID: 1000137861
HGF-Programm 38.01.04 (POF IV, LK 01) Modules, Stability, Performance and Specific Applications
Erschienen in Solar RRL
Verlag John Wiley and Sons
Band 6
Heft 3
Seiten Art.-Nr. 2100353
Bemerkung zur Veröffentlichung Special Issue: Perovskite Solar Modules - On the Way to Commercialization
Vorab online veröffentlicht am 15.09.2021
Nachgewiesen in Dimensions
Web of Science
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