公开(公告)号：EP4060757A1

公开(公告)日：2022-09-21

申请号：EP22170770.6

申请日：2016-05-31

申请人： UDC Ireland Limited

发明人： LENNARTZ, Christian ,  MAY, Falk ,  MANGOLD, Hannah Stephanie ,  ZHANG, Minlu ,  BATTAGLIARIN, Glauco ,  STENGEL, Ilona ,  HOLCOMBE, Thomas Wesley ,  METZ, Stefan

IPC分类号： H01L51/50 ,  H01L51/54 ,  C09K11/06

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 40.01 to 99.95 % by weight of a luminescent organometallic complex X having a difference of the singlet energy (E S1 (X)) and the triplet energy (E T1 (X)) of no more than 0.3 eV [(E S1 (X)) - (E T1 (X)) ≤ 0.3 eV], 0.05 to 5.00 % by weight of a fluorescent emitter Y and 0 to 59.94 % by weight of a host compound(s), wherein the amount of the organometallic complex X, the fluorescent emitter Y and the host compound(s) adds up to a total of 100% by weight and the singlet energy of the luminescent organometallic complex X (E S1 (X)) is greater than the singlet energy of the fluorescent emitter Y (E S1 (Y)) [(E S1 (X)) > E S1 (Y)]. By doping, for example, an emitting layer containing a luminescent organometallic complex having a small S 1 -T 1 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.

公开(公告)号：EP3304612A1

公开(公告)日：2018-04-11

申请号：EP16727421.6

申请日：2016-05-31

申请人： UDC Ireland Limited

发明人： LENNARTZ, Christian ,  MAY, Falk ,  MANGOLD, Hannah Stephanie ,  ZHANG, Minlu ,  BATTAGLIARIN, Glauco ,  STENGEL, Ilona ,  HOLCOMBE, Thomas Wesley ,  METZ, Stefan

IPC分类号： H01L51/50

CPC分类号： H01L51/0085 ,  C09K11/025 ,  C09K11/06 ,  C09K2211/1011 ,  C09K2211/1018 ,  C09K2211/1029 ,  C09K2211/1044 ,  C09K2211/1088 ,  C09K2211/185 ,  C09K2211/188 ,  H01L51/0055 ,  H01L51/0058 ,  H01L51/0059 ,  H01L51/006 ,  H01L51/0071 ,  H01L51/0072 ,  H01L51/0073 ,  H01L51/0074 ,  H01L51/0091 ,  H01L51/0094 ,  H01L51/5016 ,  H01L51/5028 ,  H01L2251/5376 ,  H01L2251/55 ,  Y02E10/549

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 40.01 to 99.95% 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.