Electroluminescence of Halogen Complexes with Monovalent Copper: OLED Devices and DFT Modeling

Spectroscopic characteristics of complexes of Cu[I] ion with halogens synthesized by the TDDFT/CAM-B3LYP method are studied. It is shown that S0 → S1 and S0 → T1 electronic transitions are excitations with charge transfer. In this case, the electronic transitions proceed from the HOMO, HOMO-1 and HOMO-2 localized on halogen atoms to the LUMO localized on a ligand. The matrix elements of spin-orbit interaction are calculated using the single-electron operator (HSO). Based on these compounds, the organic light emitting diodes have been created. Their current–voltage and current-brightness characteristics are investigated.