与掺杂器件相比,非掺杂有机发光二极管(OLED)具有更高的稳定性和更容易制造的优点。然而,由于纯净薄膜中的严重发射猝灭和激子an灭,具有高激子用量的发光材料通常不适合非掺杂OLED。本文中,我们希望报告一种在宿主材料中整合聚集诱导的延迟荧光(AIDF)部分的新型分子设计,以探索非掺杂OLED的高效发光剂。通过将4-(phenoxazin‐10‐yl)苯甲酰基接枝到常见的主体材料上,我们开发了一系列具有突出AIDF性能的新型发光材料。它们的纯净薄膜发出强烈的荧光,并且可以在抑制激子an灭的情况下完全收获单重态和三重态激子。这些AIDF发光剂的未掺杂OLED表现出出色的亮度(约100000 cd m−2),出色的外部量子效率(21.4–22.6%),效率下降可忽略不计并提高了操作稳定性。据我们所知,这些是迄今为止报道的最有效的非掺杂OLED。这种方便且通用的分子设计对于非掺杂OLED的发展具有重要意义。
Synthesis of symmetrical dicarbazole-biphenyls, components of phosphorescentorganic light-emitting diodes (PHOLEDs) using organocuprates
摘要:
An effective one-stage method is proposed for obtaining symmetrical dicarbazole-biphenyls, components of phosphorescent organic light-emitting diodes through organocuprates of the corresponding N-(bromophenyl)carbazoles. The reaction products were obtained in moderate to high yields.
[EN] BRIDGED BENZIMIDAZOLE-CARBENE COMPLEXES AND USE THEREOF IN OLEDS<br/>[FR] COMPLEXES BENZIMIDAZOLE-CARBÈNE PONTÉS ET LEUR UTILISATION DANS LES DELO
申请人:BASF SE
公开号:WO2012020327A1
公开(公告)日:2012-02-16
The present invention concerns a metal-carbene complex of the general formula (I) in which R5 and R6 together, or R6 and R7 together, a unit of the formula: in which * denotes the connection to the carbon atoms of the benzene ring bearing the R5 and R6 radicals or R6 and R7 radicals, and the oxygen atom is connected to the carbon atom bearing the R5, R6 or R7 radical, and A is oxygen or sulfur. The present invention further concerns light-emitting layer comprising at least one metal-carbene complex according to the present invention and an organic light-emitting diode comprising a light-emitting layer according to the present invention, a device selected from the group consisting of stationary visual display units, mobile visual display units and illumination means and the use of a metal-carbene complex according to the present invention in organic light-emitting diodes, especially as emitter, matrix material, charge carrier material and charge blocker material.
[EN] LUMINESCENT DIAZABENZIMIDAZOLE CARBENE METAL COMPLEXES<br/>[FR] COMPLEXES DIAZABENZIMIDAZOLE CARBÈNE-MÉTAL LUMINESCENTS
申请人:BASF SE
公开号:WO2015014835A1
公开(公告)日:2015-02-05
The present invention relates to metal-carbene complexes of the general formula (I), where variable M is Ir or Pt and that are characterized by variable R being a group of formula (a). The complexes are used in organic electronic devices, especially OLEDs (Organic Light-Emitting Diodes), illuminating elements, stationary visual display units and in material layers as emitter, charge transport material and/or charge or exiton blocker.
A family of phosphorescent emitter compounds containing a carbene ligand L
A
selected from the group consisting of:
is disclosed. These compounds enhance the performance of OLEDs when incorporated therein.
Triphenylene-Benzofuran/Benzothiophene/Benzoselenophene Compounds With Substituents Joining To Form Fused Rings
申请人:Ma Bin
公开号:US20110266526A1
公开(公告)日:2011-11-03
Compounds comprising a triphenylene moiety and a benzo- or dibenzo-moiety are provided. In particular, the benzo- or dibenzo-moiety has a fused substituent. These compounds may be used in organic light emitting devices, particularly in combination with yellow, orange and red emitters, to provide devices with improved properties.
Novel heteroleptic iridium complexes are disclosed. The complexes contain a phenyl pyridine ligand and another ligand containing a dibenzofuran, dibenzothiophene, dibenzoselenophene, or carbazole linked to an imidazole or benzimidazole fragment. These complexes are useful materials when incorporated into OLED devices.