摘要:
The present invention relates to metal-carbene complexes of the general formula to organic electronic devices, especially OLEDs (Organic Light-Emitting Diodes) which comprise such complexes, to an apparatus selected from the group consisting of illuminating elements, stationary visual display units and mobile visual display units comprising such an OLED, to the use of such a metal-carbene complex in OLEDs, for example as emitter, matrix material, charge transport material and/or charge or exciton blocker.
摘要:
The present invention relates to organic light-emitting devices comprising (a) an anode, (i) a cathode, and (e) an emitting layer between the anode and cathode, comprising 2 to 40 % by weight of a luminescent organometallic complex X having a difference of the singlet energy (ES1(X)) and the triplet energy (ET1(X)) of smaller than 0.2 eV [Δ (ES1(X)) - (ET1(X)) ES1(Y)]. By doping, for example, an emitting layer containing a luminescent organometallic complex having a small S1-T1 splitting, with a fluorescent emitter the emission decay time can significantly be shortened without sacrificing external quantum efficiency (EQE) because of very efficient energy transfer.
摘要:
An organic electronic device, preferably an organic light-emitting diode (OLED), comprising at least one metal- carbene complex comprising one, two or three specific bidentate diazabenzimidazole carbene ligands;a light-emitting layer compris - ing said metal-carbene complex as emitter material, preferably in combination with at least one hast material;the use of said metal- carbene complex in an OLED;an apparatus selected from the group consisting of stationary visual display units, mobile visual dis - play units, illumination units, units in items of clothing, units in handbags, units in accessoires, units in fumiture and units in wallpa - per comprising said organic electronic device, preferably said OLED, or said light-emitting layer;the metal-carbene complex com- prising one, two or three specific bidentate diazabenzimidazole carbene ligands mentioned above and a process for the preparation of said metal-carbene complex.