Universität zu Köln

Brinkmann, K. O., Zhao, J., Pourdavoud, N., Becker, T., Hu, T., Olthof, S., Meerholz, K., Hoffmann, L., Gahlmann, T., Heiderhoff, R., Oszajca, M. F., Luechinger, N. A., Rogalla, D., Chen, Y., Cheng, B. and Riedl, T. (2017). Suppressed decomposition of organometal halide perovskites by impermeable electron-extraction layers in inverted solar cells. Nat. Commun., 8. LONDON: NATURE PUBLISHING GROUP. ISSN 2041-1723

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Abstract

The area of thin-film photovoltaics has been overwhelmed by organometal halide perovskites. Unfortunately, serious stability concerns arise with perovskite solar cells. For example, methyl-ammonium lead iodide is known to decompose in the presence of water and, more severely, even under inert conditions at elevated temperatures. Here, we demonstrate inverted perovskite solar cells, in which the decomposition of the perovskite is significantly mitigated even at elevated temperatures. Specifically, we introduce a bilayered electron-extraction interlayer consisting of aluminium-doped zinc oxide and tin oxide. We evidence tin oxide grown by atomic layer deposition does form an outstandingly dense gas permeation barrier that effectively hinders the ingress of moisture towards the perovskite and-more importantly-it prevents the egress of decomposition products of the perovskite. Thereby, the overall decomposition of the perovskite is significantly suppressed, leading to an outstanding device stability.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Brinkmann, K. O. UNSPECIFIED UNSPECIFIED UNSPECIFIED Zhao, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Pourdavoud, N. UNSPECIFIED UNSPECIFIED UNSPECIFIED Becker, T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Hu, T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Olthof, S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Meerholz, K. UNSPECIFIED UNSPECIFIED UNSPECIFIED Hoffmann, L. UNSPECIFIED UNSPECIFIED UNSPECIFIED Gahlmann, T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Heiderhoff, R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Oszajca, M. F. UNSPECIFIED UNSPECIFIED UNSPECIFIED Luechinger, N. A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Rogalla, D. UNSPECIFIED UNSPECIFIED UNSPECIFIED Chen, Y. UNSPECIFIED UNSPECIFIED UNSPECIFIED Cheng, B. UNSPECIFIED UNSPECIFIED UNSPECIFIED Riedl, T. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-242680
DOI:	10.1038/ncomms13938
Journal or Publication Title:	Nat. Commun.
Volume:	8
Date:	2017
Publisher:	NATURE PUBLISHING GROUP
Place of Publication:	LONDON
ISSN:	2041-1723
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language INDUCED DEGRADATION; OXIDE; TRANSPARENT; STABILITY; TEMPERATURE; DEPOSITION; FILMS Multiple languages Multidisciplinary Sciences Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/24268