Disorder and Halide Distributions in Cesium Lead Halide Nanocrystals as Seen by Colloidal 133Cs Nuclear Magnetic Resonance Spectroscopy
Marcel Aebli,
Christoph J. Kaul,
Nuri Yazdani
et al.
Abstract:Colloidal nuclear magnetic resonance (cNMR) spectroscopy on inorganic cesium lead halide nanocrystals (CsPbX 3 NCs) is found to serve for noninvasive characterization and quantification of disorder within these structurally soft and labile particles. In particular, we show that 133 Cs cNMR is highly responsive to size variations from 3 to 11 nm or to altering the capping ligands on the surfaces of CsPbX 3 NCs. Distinct 133 Cs signals are attributed to the surface and core NC regions. Increased heterogeneous br… Show more
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