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Inkjet‐Printed Compact TiO 2 Electron Transport Layer for Perovskite Solar Cells
Author(s) -
Buffiere Marie,
Ali Kamran,
Fares Enas,
Samara Ayman,
Shetty Akshath Raghu,
Al Hassan Omar,
Belaidi Abdelhak
Publication year - 2020
Publication title -
energy technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.91
H-Index - 44
eISSN - 2194-4296
pISSN - 2194-4288
DOI - 10.1002/ente.202000330
Subject(s) - materials science , perovskite (structure) , thin film , inkwell , photovoltaic system , layer (electronics) , substrate (aquarium) , nanotechnology , optoelectronics , printed electronics , solar cell , tin oxide , chemical engineering , doping , composite material , electrical engineering , oceanography , geology , engineering
Drop‐on‐demand inkjet printing is an easily upscalable, rapid, and digital deposition technique that allows thin film formation with a high material utilization rate as ideally needed for solar cell production. Herein, a method is reported to prepare inkjet‐printed compact TiO 2 thin films that are further assessed as an electron transport layer (ETL) for perovskite solar cells and compared to reference dip‐coated TiO 2 layers. Through ink formula engineering and adjustment of the printing parameters, reliable process control is achieved, leading to a homogeneous TiO 2 coating of the fluorine‐doped tin oxide substrate. Perovskite solar cells with an inkjet‐printed TiO 2 ETL yields efficiencies of up to 13.7%, outperforming the efficiency and the process repeatability of devices prepared with the dip‐coated TiO 2 reference. Together with other recent contributions on inkjet‐printed perovskite solar cells, this work contributes to highlight the processability of thin film solar cells using digital inkjet printing for next‐generation photovoltaic applications.