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Microfluidic Processing of Ligand‐Engineered NiO Nanoparticles for Low‐Temperature Hole‐Transporting Layers in Perovskite Solar Cells by Michalska, Monika (author);Surmiak, Maciej Adam (author);Maasoumi, Fatemeh (author);Senevirathna, Dimuthu C. (author);Chantler, Paul (author);Li, Hanchen (author);Li, Bin (author);Zhang, Tian (author);Lin, Xionfeng (author);Deng, Hao (author);Chandrasekaran, Naresh (author);Peiris, T. A. Nirmal (author);Rietwyk, Kevin James (author);Chesman, Anthony S. R. (author);Alan, Tuncay (author);Vak, Doojin (author);Bach, Udo (author);Jasieniak, Jacek J. (author) is a Engineering article available to read on EtoBox.

What is Microfluidic Processing of Ligand‐Engineered NiO Nanoparticles for Low‐Temperature Hole‐Transporting Layers in Perovskite Solar Cells about?

Nickel oxide (NiO) is used as a hole‐transporting layer (HTL) in perovskite solar cells (PSCs) because of its high optical transmittance, intrinsic p‐type doping, and suitable valence band energy level. However, fabricating high‐quality NiO films typically requires high‐temperature annealing, which limits their applicability for low‐temperature, printable PSCs. Herein, the need for such postprocessing steps is circumvented by coupling 4‐hydroxybenzoic acid (HBA) or trimethyloxonium tetrafluoroborate (Me~3~OBF~4~) ligand‐modified NiO nanoparticles (NPs) with a Tesla‐valve microfluidic mixer to deposit high‐quality NiO films at a temperature <150 °C. The NP dispersions and the resulting thin films are thoroughly characterized using a combination of optical, structural, thermal, chemical, and electrical methods. While the optical and structural properties of the ligand‐exchanged NiO NPs remain comparable with those possessing the native long‐chained aliphatic ligands, the ligand‐modified NiO thin films exhibit dramatic reductions in surface energy and an increase in hole mobilities. These are correlated with concomitant and significant enhancements in performance and stability factors

Who reads Microfluidic Processing of Ligand‐Engineered NiO Nanoparticles for Low‐Temperature Hole‐Transporting Layers in Perovskite Solar Cells?

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Author
Michalska, Monika (author);Surmiak, Maciej Adam (author);Maasoumi, Fatemeh (author);Senevirathna, Dimuthu C. (author);Chantler, Paul (author);Li, Hanchen (author);Li, Bin (author);Zhang, Tian (author);Lin, Xionfeng (author);Deng, Hao (author);Chandrasekaran, Naresh (author);Peiris, T. A. Nirmal (author);Rietwyk, Kevin James (author);Chesman, Anthony S. R. (author);Alan, Tuncay (author);Vak, Doojin (author);Bach, Udo (author);Jasieniak, Jacek J. (author)
Publisher
Wiley
Published
2021
Language
EN
Field
Engineering (Physical Sciences)

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