申请人:Sumitomo Chemical Company, Limited
公开号:EP2492988A1
公开(公告)日:2012-08-29
An organic electroluminescent device comprising an anode, a cathode, a light emitting layer that is disposed between the anode and the cathode and contains a first light emitting layer material containing a phosphorescent compound and a second light emitting layer material containing a charge transporting polymer compound (that is, a light emitting layer containing a first light emitting layer material and a second light emitting layer material), and a hole transporting layer that is disposed between the anode and the light emitting layer so as to be adjacent to the light emitting layer and is composed of a hole transporting polymer compound, wherein the lowest excitation triplet energy T1e (eV) of the first light emitting layer material, the lowest excitation triplet energy T1h (eV) of the second light emitting layer material and the lowest excitation triplet energy T1t (eV) of the hole transporting polymer compound satisfy the following formulae (A) and (B):
An organic electroluminescent device comprising an anode and a cathode, and a hole transporting layer and a light emitting layer disposed between the anode and the cathode, wherein the hole transporting layer contains 1) a mixture of 2,2'-bipyridine and/or 2,2'-bipyridine derivative and a non-2,2'-bipyridinediyl group-containing hole transporting polymer compound, 2) a 2,2'-bipyridinediyl group-containing polymer compound having a constitutional unit composed of an unsubstituted or substituted 2,2'-bipyridinediyl group, and at least one constitutional unit selected from the group consisting of constitutional units composed of a divalent aromatic amine residue and constitutional units composed of an unsubstituted or substituted arylene group, or a combination thereof.
一种有机电致发光器件,包括阳极、阴极、位于阳极和阴极之间并包含含有磷光化合物的第一发光层材料和含有电荷传输聚合物化合物的第二发光层材料的发光层(即包含第一发光层材料和第二发光层材料的发光层)、以及一个空穴传输层,该层设置在阳极和发光层之间,与发光层相邻,由空穴传输高分子化合物组成,其中第一发光层材料的最低激发三重能 T1e(eV)、第二发光层材料的最低激发三重能 T1h(eV)和空穴传输高分子化合物的最低激发三重能 T1t(eV)满足下式(A)和(B):
一种有机电致发光器件,包括阳极和阴极,以及设置在阳极和阴极之间的空穴传输层和发光层,其中空穴传输层包含 1) 2,2'-联吡啶和/或 2,2'-联吡啶衍生物与非 2,2'-联吡啶二基含空穴传输聚合物化合物的混合物,2) 2、2)一种含 2,2'-联吡啶二基的聚合物化合物,具有一个由未取代或取代的 2,2'-联吡啶二基组成的构型单元,以及至少一个选自由二价芳香族胺残基组成的构型单元和由未取代或取代的芳烯基组成的构型单元组成的组的构型单元,或它们的组合。