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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/19870

Title: The impact of precursor water content on solution-processed organometal halide perovskite films and solar cells
Authors: Conings, Bert
Babayigit, Aslihan
Vangerven, Tim
D'Haen, Jan
Manca, Jean
Boyen, Hans-Gerd
Issue Date: 2015
Citation: JOURNAL OF MATERIALS CHEMISTRY A, 3 (37), p. 19123-19128
Abstract: Perovskite solar cells are well known to degrade under post-fabrication stress, among others due to humidity as a consequence of the hydrophilic properties of the organic cation. On the other hand, it has been shown that the controlled addition of water molecules during the formation of the perovskite (while starting from water-free precursor materials) yields larger perovskite crystals with less defects, resulting in better device performance. One aspect still missing in this line of research is the water content of the perovskite precursors themselves: although most of them are prepared with anhydrous solvents as a precaution towards premature degradation, it is still unclear whether or not the precursors really need to be dry. In this paper, the impact of the perovskite precursor's water content up to 10 vol% is investigated, in the form of a detailed study regarding the opto-electronic and morphological properties of the resulting films and devices. It is found that only modest changes occur in the films that do not affect the final photovoltaic performance, thus relaxing the conditions for large-scale production of this upcoming photovoltaic technology.
Notes: [Conings, Bert; Babayigit, Aslihan; Vangerven, Tim; D'Haen, Jan; Boyen, Hans-Gerd] Hasselt Univ, Inst Mat Res, B-3590 Diepenbeek, Belgium. [Manca, Jean] Hasselt Univ, X LaB, B-3590 Diepenbeek, Belgium.
URI: http://hdl.handle.net/1942/19870
DOI: 10.1039/c5ta06199g
ISI #: 000361553100040
ISSN: 2050-7488
Category: A1
Type: Journal Contribution
Validation: ecoom, 2016
Appears in Collections: Research publications

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