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Proceedings Paper

Multipass inkjet printing of methylammonium lead iodide for planar perovskite solar cells (Conference Presentation)
Author(s): Florian Mathies; Tobias Abzieher; Diana Rueda; Aina Quintilla; Ulrich Lemmer
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Paper Abstract

We show inkjet printed state-of-the-art perovskite solar cells with efficiencies of up to 12% which is an important step towards fully printed large scale production of photovoltaic perovskite devices. In comparison, the spin-coated reference achieves 13% efficiency. In both cases, the solar cell absorbers are prepared using a one-step process on a TiO2 compact layer without mesoporous intermediate layer as electron transport material and spiroMeOTAD as hole transport material. Moreover, we show that controlling printing parameters, like drop spacing and size, is essential to optimizing the final perovskite performance. Whereas parameters were initially controlled to be consistent with a final layer thicknesses known from literature, subsequent processes were aimed at also controlling crystallinity and roughness. To demonstrate the homogeneity of the printed devices, light beam induced current measurements (LBIC) were made. To evaluate the quality of the perovskite layer and the charge transfer efficiency in the device, time resolved photoluminescence measurements were conducted on the perovskite with and without electrical transport layers. Light soaking effects were also investigated and evaluated. Important differences between printed and spin-coated devices will be outlined, as well as other relevant parameters to optimize printed device performance.

Paper Details

Date Published: 2 November 2016
PDF: 1 pages
Proc. SPIE 9942, Organic Photovoltaics XVII, 994209 (2 November 2016); doi: 10.1117/12.2238163
Show Author Affiliations
Florian Mathies, Karlsruher Institut für Technologie (Germany)
Tobias Abzieher, Karlsruher Institut für Technologie (Germany)
Diana Rueda, Karlsruher Institut für Technologie (Germany)
Aina Quintilla, Karlsruher Institut für Technologie (Germany)
Ulrich Lemmer, Karlsruher Institut für Technologie (Germany)

Published in SPIE Proceedings Vol. 9942:
Organic Photovoltaics XVII
Zakya H. Kafafi; Paul A. Lane; Ifor D. W. Samuel, Editor(s)

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