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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/27720

Title: Multi-layered hybrid perovskites templated with carbazole derivatives: optical properties, enhanced moisture stability and solar cell characteristics
Authors: Herckens, Roald
Van Gompel, Wouter
Song, Wenya
Gélvez-Rueda, María C.
Maufort, Arthur
Ruttens, Bart
D'Haen, Jan
Grozema, Ferdinand
Aernouts, Tom
Lutsen, Laurence
Vanderzande, Dirk
Issue Date: 2018
Citation: Journal of Materials Chemistry A, 6(45), p. 22899-22908
Abstract: Research into 2D layered hybrid perovskites is on the rise due to the enhanced stability of these materials compared to 3D hybrid perovskites. Recently, interest towards the use of functional organic cations for these materials is increasing. However, a vast amount of the parameter space remains unexplored in multi-layered (n > 1) hybrid perovskites for solar cell applications. Here, we incorporate carbazole derivatives as a proof of concept towards the use of tailored functional molecules in multi-layered perovskites. Films of low-n carbazole containing perovskites show high photoconductivity half-lifetimes. Higher-n (hni ¼ 40) multi-layered perovskite films possess charge carrier diffusion lengths comparable to MAPI thin films. Solar cells containing these materials have comparable efficiencies to our MAPI and phenethylammonium (PEA)-containing multi-layered perovskite reference devices. Moisture stability tests were performed both at the material and device levels. In comparison to MAPI and PEA-based materials and solar cells, the addition of a small percentage of the carbazole derivative to the perovskite material significantly enhances the moisture stability.
URI: http://hdl.handle.net/1942/27720
DOI: 10.1039/C8TA08019D
ISI #: 000451738200054
ISSN: 2050-7488
Category: A1
Type: Journal Contribution
Appears in Collections: Research publications

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