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    • 5. 发明授权
    • Organic electroluminescence device and organic electroluminescence
device material
    • 有机电致发光器件和有机电致发光器件材料
    • US6048631A
    • 2000-04-11
    • US893757
    • 1997-07-11
    • Hisamitsu TakahashiYoshihisa TsuruokaSatoshi TanakaToshio Miyauchi
    • Hisamitsu TakahashiYoshihisa TsuruokaSatoshi TanakaToshio Miyauchi
    • H05B33/14C09K11/06H01L51/30H01L51/50
    • H01L51/0077C09K11/06H01L51/0079H01L51/0059H01L51/5012Y10S428/917
    • An object of this invention is to provide an organic EL device material stable against heat, having a high purity in bluish light emission and a high efficiency. The organic EL device comprises a glass substrate, a transparent anode, a TPD which is an electron hole implanted transporting layer, an organic luminous layer, Alq.sub.3 which is an electron implanted transporting layer and a cathode. The organic luminous layer is an aluminum complex which is .mu.-oxozi [bis(2-(2-benzo oxazolyl)-phenolate) aluminum (III)]. Plus and minus DC voltages are applied to the anode and cathode respectively. The organic luminous layer indicates bluish light emission of 1314 cd/m.sup.2 at 16V. A peak wave length of the luminous spectrum is 420 nm and chromaticity coordinates are x=0.185 and y=0.178 and a high purity as bluish color is assured. The organic EL device material is stable against heat and difficult to deteriorate. Because the device structure is three-layer structure in which the organic luminous layer is sandwiched by an electron implanted transporting layer and an electron hole implanted transporting layer, diffusion of exciton to electrodes is prevented thereby improving the efficiency and reactive current is reduced thereby improving the service life.
    • 本发明的目的是提供一种耐热稳定的有机EL元件材料,其蓝色发光纯度高,效率高。 有机EL器件包括玻璃衬底,透明阳极,作为电子空穴注入传输层的TPD,有机发光层,作为电子注入传输层的Alq3和阴极。 有机发光层是作为多氧 - 双(2-(2-苯并恶唑基) - 酚盐)铝(III)]的铝络合物。 负和直流电压分别施加到阳极和阴极。 有机发光层在16V时表示蓝色发光1314cd / m 2。 光谱的峰值波长为420nm,色度坐标为x = 0.185,y = 0.178,确保为蓝色的高纯度。 有机EL元件材料耐热稳定,难以劣化。 由于器件结构是其中有机发光层被电子注入传输层和电子空穴注入传输层夹在中间的三层结构,因此可以防止激子扩散到电极,从而提高效率,降低无功电流,从而改善 使用寿命。