This research demonstrates high-performance near-infrared organic light-emitting diodes (OLEDs) achieving 925 nm emission with an external quantum efficiency of 2.24% and maximum radiance of 39.97 W sr⁻¹ m⁻². This is achieved through a transfer printing technique that creates a bilayer architecture of self-assembled Pt(II) complex (energy donor) and near-infrared fluorescent dye BTP-eC9 (energy acceptor). Triplet-to-singlet energy transfer from the Pt(II) complex to the dye results in high-intensity hyperfluorescence. The method proves successful with other dyes, expanding the possibilities for bright near-infrared OLEDs.
