Fig. 1. CsPbBr₃ nanoplatelet–perylene diimide hybrids.

a Schematic representation of CsPbBr₃ NPLs and PDI molecules charge transfer. b Optical absorption (dashed line) and photoluminescence (PL) emission (full line) spectra of CsPbBr₃ NPLs (4 monolayers (ML)). Transmission electron microscopy image of the NPLs (inset). c Schematic representation of the charge-transfer processes indicating the formation of the charge separated state (CS) by hole transfer (HT) from the PDI excited state (PDI*) to NPLs and electron transfer (ET) from the NPLs excited state (NPLs*) to PDI. d Optical absorption (dashed line) and PL emission (full line) spectra of PDI molecules.