Fig. 1: A diagram illustrating the dye-perovskite nanocrystal coupled system with cooperative sensitized upconversion. | Nature Communications

Fig. 1: A diagram illustrating the dye-perovskite nanocrystal coupled system with cooperative sensitized upconversion.

From: Near infrared sensitized exciton upconversion luminescence from inorganic perovskite nanocrystals

Fig. 1

The cyan sphere represents the A-site ion (Cs⁺), while the purple and dark brown octahedra correspond to [PbX6]2- and [YbX6]3-, respectively, in the ABX3 (CsPbX3) perovskite structure (semi-transparent light green cube). The black wavy lines depict the oleic acid ligands, while the yellow wavy lines (with star ends) represent the IR783 dye molecules (chemical structure shown on the right) attached to the nanocrystal surface. (ET: energy transfer, NIR: near infrared, VIS: visible).

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