ACS Applied Materials & Interfaces · 2021 · 155 citations · 53 references
Natural SciencesMaterials EngineeringMaterials ScienceElectronic MaterialsNanomaterialsSemiconductor MaterialsInorganic NanoparticlesNanoparticle DispersionsPhotovoltaic MaterialsQuantum DotsSemiconductor NanomaterialsSolar CellsColloidal Quantum DotsColloidal Semiconductor NanocrystalsFilm DepositionPhotovoltaic EfficiencyQuantum Dot Solar CellsScalable FabricationSemiconductor Quantum DotsSolar Cell Fabrication
in 2,6-difluoropyridine (DFP), we obtained inks that are colloidally stable for more than 3 months. Furthermore, we demonstrated that DFP yields stable dispersions even of large diameter PbS QDs, which are of great practical relevance owing to the extended coverage of the near-infrared region. The optimization of blade-coating deposition of DFP-based inks enabled the fabrication of PbS QD solar cells with power conversion efficiencies of up to 8.7%. It is important to underline that this performance is commensurate with the devices made by spin coating of inks with the same ligands. A good shelf life-time of these inks manifests itself in the comparatively high photovoltaic efficiency of 5.8% obtained with inks stored for more than 120 days.
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Hybrid passivated colloidal quantum dot solids
Alexander H. Ip, Susanna M. Thon, Sjoerd Hoogland et al. · Nature Nanotechnology · 2012 · 1.2K citations
Size-Dependent Optical Properties of Colloidal PbS Quantum Dots
Iwan Moreels, Karel Lambert, D. Smeets et al. · ACS Nano · 2009 · 1.2K citations · Full text