Abstract

So far, single-junction flexible PSCs have been lacking in efficiency compared to rigid PSCs. Recently, > 23% have been reported. We therefore focus on understanding the differences between rigid and flexible substrates. One often neglected parameter is the different surface roughness which directly affects the perovskite film formation. Therefore, we adjust the layer thickness of SnO2 and the perovskite layers. Furthermore, we introduce a PMMA layer between the perovskite and the hole transporting material (HTM), spiro-MeOTAD, to mitigate shunting pathways. In addition, the multication perovskite Rb0.02Cs0.05FA0.77MA0.16Pb(I0.83Br0.17)3 is employed, resulting in stabilized performances of 16% for a flexible ITO substrate and 19% on a rigid ITO substrate.

Details

Title
Understanding the impact of surface roughness: changing from FTO to ITO to PEN/ITO for flexible perovskite solar cells
Author
Holzhey, Philippe 1 ; Prettl, Michael 2 ; Collavini, Silvia 3 ; Mortan, Claudiu 2 ; Saliba, Michael 4 

 University of Fribourg, Adolphe Merkle Institute, Fribourg, Switzerland (GRID:grid.8534.a) (ISNI:0000 0004 0478 1713) 
 University of Stuttgart, Institute for Photovoltaics, Stuttgart, Germany (GRID:grid.5719.a) (ISNI:0000 0004 1936 9713) 
 San Sebastián, Spain (GRID:grid.5719.a) 
 University of Stuttgart, Institute for Photovoltaics, Stuttgart, Germany (GRID:grid.5719.a) (ISNI:0000 0004 1936 9713); Forschungszentrum Jülich GmbH, IEK-5 Photovoltaik, Jülich, Germany (GRID:grid.8385.6) (ISNI:0000 0001 2297 375X) 
Pages
6375
Publication year
2023
Publication date
2023
Publisher
Nature Publishing Group
e-ISSN
20452322
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2803143917
Copyright
© The Author(s) 2023. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.