Anion Exchange and the Quantum-Cutting Energy Threshold in Ytterbium-Doped CsPb(Cl1–x Br x )3 Perovskite Nanocrystals

• Published in: Nano letters Vol. 19; no. 3; pp. 1931 - 1937
• Main Authors: Milstein, Tyler J, Kluherz, Kyle T, Kroupa, Daniel M, Erickson, Christian S, De Yoreo, James J, Gamelin, Daniel R
• Format: Journal Article
• Language: English
• Published: United States American Chemical Society 13.03.2019
• Subjects: ytterbium doping; anion exchange; Perovskite nanocrystals; quantum cutting

Colloidal halide perovskite nanocrystals of CsPbCl3 doped with Yb3+ have demonstrated remarkably high sensitized photoluminescence quantum yields (PLQYs), approaching 200%, attributed to a picosecond quantum-cutting process in which one photon absorbed by the nanocrystal generates two photons emitte...