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    • 3. 发明授权
    • Organic electroluminescent device and method for manufacturing same
    • 有机电致发光器件及其制造方法
    • US07745015B2
    • 2010-06-29
    • US10505677
    • 2004-03-24
    • Yasuko HirayamaTakeshi SanoTakahisa Sakakibara
    • Yasuko HirayamaTakeshi SanoTakahisa Sakakibara
    • B05D5/06H01J1/62
    • H01L51/50H01L51/0036H01L51/0037H01L51/0038H01L51/0039H01L51/0042H01L51/0043H01L51/0052H01L51/0059H01L51/007H01L51/0081H01L51/5012H01L51/5048H01L51/56Y10S428/917Y10T428/24942
    • An organic electroluminescent device comprises a plurality of stacked layers of polymeric materials soluble in an organic solvent. As a polymeric material forming a lower layer, a polymeric material is selected having a molecular weight greater than the molecular weight of a polymeric material of a layer to be formed on the lower layer. As an organic solvent for dissolving the polymeric material forming the lower layer, an organic solvent is selected having a dielectric constant greater than the dielectric constant of an organic solvent for dissolving the polymeric material forming an upper layer. With a light emitting layer being the lower layer and an electron transport layer being the upper layer, it is preferable that the electron transport layer includes a polymeric material having hole blocking property. With a light emitting layer being the lower layer and an electron transport layer being the upper layer, it is preferable that the repeating unit of the polymeric material forming the light emitting layer and the repeating unit of the polymeric material forming the electron transport layer include the same chemical structure.
    • 有机电致发光器件包括可溶于有机溶剂的聚合材料的多个层叠层。 作为形成下层的聚合物材料,选择分子量大于下层上形成的层的聚合物材料的分子量的聚合材料。 作为用于溶解形成下层的聚合物材料的有机溶剂,选择介电常数大于用于溶解形成上层的聚合物材料的有机溶剂的介电常数的有机溶剂。 作为下层的发光层和作为上层的电子传输层,优选电子传输层包括具有空穴阻挡性的聚合物材料。 作为上层的发光层和作为上层的电子传输层,优选形成发光层的聚合物材料的重复单元和形成电子传输层的聚合物材料的重复单元包括 相同的化学结构。