An organic electroluminescence device includes: a pair of electrodes; and at least one organic layer including a light emitting layer, the light emitting layer being provided between the pair of electrodes, wherein at least one layer of the at least one organic layer contains a compound represented by formula (1):
wherein each of Z
11
and Z
12
independently represents an aromatic heterocyclic ring or an aromatic hydrocarbon ring; R
11
represents a hydrogen atom or a substituent, provided that a plurality of R
11
s are the same or different; m represents an integer of 1 or more; and L
1
represents a single bond or an m-valent linking group and is linked to any one of C atoms in R
11
, Z
11
and Z
12
, provided that when m is 1, L
1
does not exist.
Three novel planarized CPB derivatives (ICzCz, ICzPCz, ICzICz) have been synthesized and characterized concerning applications as host materials for PhOLEDs. The incorporation of fully planar indolo[3,2,1-jk]carbazole (ICz) in the CBP scaffold has been systematically investigated, revealing a significant impact on molecular properties, such as improved thermal stability (tg > 110 °C), high triplet
合成了三种新颖的平面化CPB衍生物(ICzCz,ICzPCz,ICzICz),并对其作为PhOLED基质材料的应用进行了表征。已经对CBP支架中完全平面的吲哚并[3,2,1- jk ]咔唑(ICz)的掺入进行了系统研究,发现其对分子性能有显着影响,例如改善了热稳定性(t g > 110°C),高三重态能量(E T > 2.81 eV)和电荷传输性质。采用最新开发的材料作为主体材料,高效绿色PhOLED(CE最大值:60.1 cd A -1,PE最大值:42.1 lm W -1,EQEmax:15.9%)在1000 cd m -2时具有非常低的5%效率滚降,并且已经实现了PE为26.1 lm W -1的蓝色PhOLED(ICzCz)。因此,提出了关于将ICz用作电致发光材料不可或缺的组成部分的第一份综合报告,确立了这种特殊的结构动机作为该领域的通用结构动机。
POLYMER, ORGANIC LIGHT-EMITTING DEVICE MATERIAL INCLUDING THE SAME, AND ORGANIC LIGHT-EMITTING DEVICE INCLUDING THE ORGANIC LIGHT-EMITTING DEVICE MATERIAL
申请人:SAMSUNG ELECTRONICS CO., LTD.
公开号:US20170186950A1
公开(公告)日:2017-06-29
A polymer comprising a first repeating unit represented by Formula 1:
wherein, in Formula 1, groups and variables are the same as described in the specification.
ORGANIC ELECTROLUMINESCENT APPARATUS
申请人:Merck Patent GmbH
公开号:US20220407013A1
公开(公告)日:2022-12-22
The present invention relates to an organic electroluminescent device comprising a mixture comprising an electron-transporting host material and a hole-transporting host material, and to a formulation comprising a mixture of the host materials and to a mixture comprising the host materials. The electron-transporting host material corresponds to a compound of the formula (1) from the class of compounds containing a bispirofluorenyl unit.