公开(公告)号：US20180182980A1

公开(公告)日：2018-06-28

申请号：US15578763

申请日：2016-05-31

Applicant: UDC IRELAND LIMITED

Inventor： Christian Lennartz ,  Falk May ,  Hannah Stephanie Mangold ,  Minlu Zhang ,  Glauco Battagliarin ,  Ilona Stengel ,  Thomas Wesley Holcombe ,  Stefan Metz

IPC: H01L51/00 ,  C09K11/06 ,  C09K11/02

CPC classification number: 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

Abstract: 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.

公开(公告)号：US20250017099A1

公开(公告)日：2025-01-09

申请号：US18882010

申请日：2024-09-11

Applicant: UDC IRELAND LIMITED

Inventor： Christian Lennartz ,  Falk May ,  Hannah Stephanie Mangold ,  Minlu Zhang ,  Glauco Battagliarin ,  Ilona Stengel ,  Thomas Wesley Holcombe ,  Stefan Metz

IPC: H10K85/30 ,  C09K11/02 ,  C09K11/06 ,  H10K50/11 ,  H10K50/12 ,  H10K85/40 ,  H10K85/60 ,  H10K101/00 ,  H10K101/10

Abstract: 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.