@article{d34c95f9fd9648d4bfd18d4aa493e8b3,
title = "Laser Processing of KBr-Modified SnO2 for Efficient Rigid and Flexible Ambient-Processed Perovskite Solar Cells",
abstract = "A combination of KBr modification and laser processing is utilized to prepare SnO2 films for rigid and flexible perovskite solar cells (PSCs). The KBr modification effectively passivates the defects at the interface between SnO2 and perovskite as well as grain boundaries of the perovskite film. A power conversion efficiency (PCE) of 20.14% is achieved with the KBr-modified SnO2 for the rigid PSCs fabricated under a relative humidity of around 65–75%, compared to the pristine SnO2 films with a PCE of 18.66%. Then, a picosecond ultraviolet laser is employed to process KBr-modified SnO2 films on flexible substrates with a rapid scanning rate of 100 mm s−1. The laser process improves the PCEs and durability of the PSCs. The flexible PSCs fabricated by the laser remain over 80% of their initial PCEs after 1000 bending cycles, higher than those fabricated by the hot plate showing 40% of their initial PCEs after the same bending cycles.",
keywords = "ambient processing, flexible devices, laser processing, perovskite solar cells, tin oxide",
author = "Hongbo Mo and Qian Chen and Dong Wang and Dongxu Cheng and Suresh Maniyarasu and Mokhtar, {Muhamad Z.} and Janet Jacobs and See, {Tian Long} and Thomas, {Andrew G.} and Curry, {Richard J.} and Lin Li and Zhu Liu",
note = "Funding Information: The study was supported by the Engineering and Physical Sciences Research Council (EPSRC) funding under grant no. EP/V008188/1. H.M. thanks The China Scholarship Council – University of Manchester joint scholarship for his PhD study. The authors acknowledge the use of the Department of Materials X‐Ray Diffraction Suite at the University of Manchester and for the technical support by Dr Gary Harrison. The authors would like to thank Dr Marek Nikiel from the Photon Science Institute, Department of Materials, the University of Manchester, for his help on AFM measurements. The authors would like to thank Dr Khaled Parvez from the Department of Chemistry, The University of Manchester, for his support on water contact angle measurements. The authors would like to thank Dr Ben Spencer for the technical support on XPS from Department of Materials at the University of Manchester. Publisher Copyright: {\textcopyright} 2022 The Authors. Solar RRL published by Wiley-VCH GmbH.",
year = "2022",
month = dec,
day = "1",
doi = "10.1002/solr.202200798",
language = "English",
volume = "6",
journal = "Solar RRL",
issn = "2367-198X",
publisher = "John Wiley & Sons Ltd",
number = "12",
}
