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Lighting equipment and multicolor phosphorescent light-emitting organic electroluminescent element

机译:照明设备和多色发磷光的有机电致发光元件

摘要

An organic electroluminescent device having a phosphorescent dopant of different emission wavelengths, exhibiting white emission, especially, the power efficient, long-life, the present invention, versus drive current chromaticity and excellent storage stability to provide a multicolor phosphorescent light-emitting organic electroluminescent device with excellent stability, a lighting apparatus using the same. A content of the phosphorescent dopant of two or more different emission wavelengths, has an emission layer having two or more layers, the multi-color phosphorescent organic electroluminescent device, an organic electroluminescent device is a light emitting dopant for phosphorescent light emitting dopant In, which has at least one layer of a light emitting layer A containing a phosphorescent dopant of two or more different emission wavelengths in the same layer, 4 wt%, the content of the light-emitting dopant of the highest concentration used in the light emitting layer A above, 20% by mass or less, to the cathode side of the light-emitting layer A, I is characterized in that the maximum emission wavelength having a light emitting layer B of 480nm or less.
机译:本发明提供了一种具有不同发射波长的磷光掺杂剂的有机电致发光器件,其显示白色发射,特别是功率有效,长寿命,相对于驱动电流色度和优异的存储稳定性,本发明提供了一种多色发磷光的有机电致发光器件。具有优异稳定性的使用该照明装置的照明装置。包含两种或多种不同发射波长的磷光掺杂剂,具有具有两层或更多层的发射层,所述多色磷光有机电致发光器件,有机电致发光器件是用于磷光发光掺杂剂In的发光掺杂剂,其中具有至少一层发光层A,该发光层A在同一层中包含两种或更多种不同发射波长的磷光掺杂剂,其重量百分比为4 wt%,用于发光层A的最高浓度的发光掺杂剂的含量相对于发光层A的阴极侧为20质量%以下,I的特征在于,发光层B的最大发光波长为480nm以下。

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