Near-infrared electroluminescence based on perylenediimide-doped tris(8-quinolinolato) aluminum.

For the purpose of exploring near-infrared emission, the photoluminescence (PL) and electro- luminescence (EL) of N,N^′-bis(neopentyl)-3,4:9,10-perylenebis(dicarboximide) (BNPTCD): tris(8-quinolinolato)aluminum (Alq₃) mixed films were investigated. It was found that BNPTCD:Alq₃ mixed films exhibit PL in the near-infrared wavelength region and that organic light-emitting diodes using Alq₃ highly doped with BNPTCD as an emitting layer exhibit near-infrared EL with a peak at 805 nm originating from BNPTCD aggregates. [ABSTRACT FROM AUTHOR]