摘要:
The present disclosure relates to an organic electroluminescent device comprising a first electrode, a second electrode facing the first electrode, a light-emitting layer between the first electrode and the second electrode, and an electron transport layer and an electron buffer layer between the light-emitting layer and the second electrode. An organic electroluminescent device having low driving voltage, high luminous efficiency and/or long lisfespan can be provided by comprising the compound of the present disclosure in an electron buffer layer and an electron transport layer.
摘要:
The present invention relates to a compound of formula (I) based on a structure comprising functionalized spirofluorene and fused aromatics or non-aromatic rings with at least one heteroatom, and used as hole transporting material in a optoelectronic and/or photoelectrochemical device.
摘要:
The present invention relates to an organic electroluminescent compound and an organic electroluminescent device comprising the same. The organic electroluminescent compound according to the present invention can be comprised in a light-emitting layer or an electron buffer layer, and is effective to produce an organic electroluminescent device having low driving voltage, excellent current and power efficiencies, and significantly improved operational lifespan.
摘要:
一种有机电致发光器件,包括发光层(3),发光层(3)的主体材料包含热活化延迟荧光材料中的一种,主体材料中掺杂染料,染料包含至少一种磷光染料。热活化延迟荧光材料的三线态能级与单线态能级差(ΔE ST )较小。采用该类材料作为磷光主体,则部分三线态激子能级传递到单线态激子,整体三线态激子的数量较少,从而三线态激子浓度降低,复合区域变窄,有效降低了激子进入电荷传输层的几率,同时复合区域变窄有效防止了N型掺杂剂向激子复合区域的扩散。同时采用该类主体材料,器件对应较低的工作电压。
摘要:
Organic Light-Emitting Device An organic light-emitting device (100) comprising an anode (103); a cathode (109); a light-emitting layer (107) between the anode and the cathode; and a hole-transporting layer (105) between the anode and the cathode, wherein the light-emitting layer comprises a light-emitting compound of formula (I) and the hole-transporting layer comprises a hole-transporting material having a HOMO level that is no more than 5.1 e V from vacuum level: N N ML x R 2 (R ) m (R ) n y (I) wherein: R in each occurrence is independently a substituent; R 2 is H or a substituent; m is 0, 1 or 2; n is 0, 1, 2, 3 or 4; M is a transition metal; L is a ligand; y is at least 1; and x is 0 or a positive integer. (FIGURE 1)
摘要翻译:有机发光器件包括阳极(103)的有机发光器件(100) 阴极(109); 阳极和阴极之间的发光层(107); 和在阳极和阴极之间的空穴传输层(105),其中发光层包含式(I)的发光化合物,空穴传输层包含具有HOMO能级的空穴传输材料, 从真空度不超过5.1e V:NN ML x R 2(R)m(R)ny(I)其中:R在每次出现时独立地为取代基; R 2是H或取代基; m为0,1或2; n为0,1,2,3或4; M是过渡金属; L是配体; y至少为1; x为0或正整数。 (图1)