Highly Luminescent Cesium Lead Halide Perovskite Nanocrystals with Tunable Composition and Thickness by Ultrasonication
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Open Access
- 23 October 2016
- journal article
- research article
- Published by Wiley in Angewandte Chemie-International Edition
- Vol. 55 (44), 13887-13892
- https://doi.org/10.1002/anie.201605909
Abstract
We describe the simple, scalable, single-step, and polar-solvent-free synthesis of high-quality colloidal CsPbX3 (X=Cl, Br, and I) perovskite nanocrystals (NCs) with tunable halide ion composition and thickness by direct ultrasonication of the corresponding precursor solutions in the presence of organic capping molecules. High angle annular dark field scanning transmission electron microscopy (HAADF-STEM) revealed the cubic crystal structure and surface termination of the NCs with atomic resolution. The NCs exhibit high photoluminescence quantum yields, narrow emission line widths, and considerable air stability. Furthermore, we investigated the quantum size effects in CsPbBr3 and CsPbI3 nanoplatelets by tuning their thickness down to only three to six monolayers. The high quality of the prepared NCs (CsPbBr3) was confirmed by amplified spontaneous emission with low thresholds. The versatility of this synthesis approach was demonstrated by synthesizing different perovskite NCs.This publication has 33 references indexed in Scilit:
- Organolead Halide Perovskite Nanocrystals: Branched Capping Ligands Control Crystal Size and StabilityAngewandte Chemie-International Edition, 2016
- Organolead Halide Perovskite Nanocrystals: Branched Capping Ligands Control Crystal Size and StabilityAngewandte Chemie, 2016
- Tuning the Optical Properties of Cesium Lead Halide Perovskite Nanocrystals by Anion Exchange ReactionsJournal of the American Chemical Society, 2015
- Control of Emission Color of High Quantum Yield CH3NH3PbBr3 Perovskite Quantum Dots by Precipitation TemperatureAdvanced Science, 2015
- Brightly Luminescent and Color-Tunable Colloidal CH3NH3PbX3 (X = Br, I, Cl) Quantum Dots: Potential Alternatives for Display TechnologyACS Nano, 2015
- Tuning the Light Emission Properties by Band Gap Engineering in Hybrid Lead Halide PerovskiteJournal of the American Chemical Society, 2014
- Maximizing the emissive properties of CH3NH3PbBr3 perovskite nanoparticlesJournal of Materials Chemistry A, 2014
- Nontemplate Synthesis of CH3NH3PbBr3 Perovskite NanoparticlesJournal of the American Chemical Society, 2014
- Formamidinium lead trihalide: a broadly tunable perovskite for efficient planar heterojunction solar cellsEnergy & Environmental Science, 2014
- Efficient Hybrid Solar Cells Based on Meso-Superstructured Organometal Halide PerovskitesScience, 2012