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    • 8. 发明授权
    • White organic light emitting device
    • 白色有机发光装置
    • US09159957B2
    • 2015-10-13
    • US13280725
    • 2011-10-25
    • Sung-Hoon PiehChang-Oh KimKi-Woog Song
    • Sung-Hoon PiehChang-Oh KimKi-Woog Song
    • H01L51/50H01L51/52H01L27/32
    • H01L51/5278H01L27/3209H01L51/504H01L51/5076H01L51/508H01L2251/5376
    • A white organic light emitting device which has high color temperature characteristics and no change in color coordinates according to luminance change, includes a first electrode and a second electrode opposite to each other on a substrate, a charge generation layer formed between the first electrode and the second electrode, a second stack including a second light emitting layer formed between the charge generation layer and the second electrode, and a first stack including a first light emitting layer formed between the first electrode and the charge generation layer, wherein the first emitting layer has low singlet-triplet exchange energy to change triplet excitons into a singlet state by triplet-triplet annihilation and a dopant concentration of the first light emitting layer is adjusted according to a luminance change curve of the second stack.
    • 根据亮度变化具有高色温特性和色坐标变化的白色有机发光器件包括在基板上彼此相对的第一电极和第二电极,形成在第一电极和第二电极之间的电荷产生层 第二电极,包括形成在电荷产生层和第二电极之间的第二发光层的第二叠层和包括形成在第一电极和电荷产生层之间的第一发光层的第一堆叠,其中第一发光层具有 根据第二叠层的亮度变化曲线来调整低三线态三重态交换能量,通过三线态三重态湮灭将三线态激子变为单态,并且调整第一发光层的掺杂剂浓度。