申请人:IDEMITSU KOSAN COMPANY LIMITED
公开号:EP0569827A2
公开(公告)日:1993-11-18
Disclosed is an organic electroluminescence device which comprises laminating layers in the order of anode/light emitting layer/adhesive layer/cathode, or anode/hole-injecting layer/light emitting layer/adhesive layer/cathode, the energy gap of the light emitting layer being larger than that of 8-hydroxyquinoline or metal complex thereof and contained in the adhesive layer, the light emitting layer comprising a compound which emits a blue, greenish blue or bluish green light in CIE chromaticity coordinates, and the adhesive layer including a metal complex of 8-hydroxyquinoline or a derivative thereof and at least one organic compound in an arbitrary region in the direction of the thickness of the layer, the thickness of which is smaller than that of the above-mentioned light emitting layer.
According to the above organic electroluminescence device, improvements in uniformity in light emission and emission efficiency are realized.
本发明公开了一种有机电致发光器件,该器件包括按阳极/发光层/粘合剂层/阴极或阳极/注孔层/发光层/粘合剂层/阴极的顺序层叠的层,发光层的能隙大于8-羟基喹啉或其金属络合物的能隙并包含在粘合剂层中、发光层包括在CIE色度坐标中发出蓝光、蓝绿色光或蓝绿色光的化合物,粘合层包括8-羟基喹啉或其衍生物的金属络合物和至少一种有机化合物,粘合层的厚度小于上述发光层的厚度。
根据上述有机电致发光装置,实现了光发射均匀性和发射效率的改善。