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From Groundwork to Efficient Solar Cells: On the Importance of the Substrate Material in Co‐Evaporated Perovskite Solar Cells

Abzieher, Tobias 1; Feeney, Thomas 2; Schackmar, Fabian 1,2; Donie, Yidenekachew J. 1,2; Hossain, Ihteaz M. 2; Schwenzer, Jonas A. 1; Hellmann, Tim; Mayer, Thomas; Powalla, Michael 1; 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)


Vacuum-based deposition of optoelectronic thin films has a long-standing history. However, in the field of perovskite-based photovoltaics, these techniques are still not as advanced as their solution-based counterparts. Although high-efficiency vacuum-based perovskite solar cells reaching power conversion efficiencies (PCEs) above 20% are reported, the number of studies on the underlying physical and chemical mechanism of the co-evaporation of lead iodide and methylammonium iodide is low. In this study, the impact of one of the most crucial process parameters in vacuum processes—the substrate material—is studied. It is shown that not only the morphology of the co-evaporated perovskite thin films is significantly influenced by the surface polarity of the substrate material, but also the incorporation of the organic compound into the perovskite framework. Based on these studies, a selection guide for suitable substrate materials for efficient co-evaporated perovskite thin films is derived. This selection guide points out that the organic vacuum-processable hole transport material 2,2″,7,7″-tetra(N,N-di-p-tolyl)amino-9,9-spirobifluorene is an ideal candidate for the fabrication of efficient all-evaporated perovskite solar cells, demonstrating PCEs above 19%. ... mehr

Verlagsausgabe §
DOI: 10.5445/IR/1000136183
Veröffentlicht am 05.08.2021
DOI: 10.1002/adfm.202104482
Zitationen: 25
Web of Science
Zitationen: 22
Zitationen: 27
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Mikrostrukturtechnik (IMT)
Universität Karlsruhe (TH) – Interfakultative Einrichtungen (Interfakultative Einrichtungen)
Karlsruhe School of Optics & Photonics (KSOP)
Lichttechnisches Institut (LTI)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 04.10.2021
Sprache Englisch
Identifikator ISSN: 1616-301X, 1616-3028
KITopen-ID: 1000136183
HGF-Programm 38.01.03 (POF IV, LK 01) Cell Design and Development
Weitere HGF-Programme 38.01.04 (POF IV, LK 01) Modules, Stability, Performance and Specific Applications
Erschienen in Advanced functional materials
Verlag Wiley-VCH Verlag
Band 31
Heft 42
Seiten Art.-Nr.: 2104482
Vorab online veröffentlicht am 24.07.2021
Nachgewiesen in Dimensions
Web of Science
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