The invention belongs to the technical field of organic electroluminescence, and particularly relates to an organic electroluminescence device. A hole transport region of the organic light-emitting device comprises at least two hole transport layers, one hole transport layer contains one of the compounds shown in the formula (I), the other hole transport layer contains one of the compounds shown in the formula (II), and the hole transport region adopting the layer structure has the advantages that the hole transport efficiency is high, and the hole transport efficiency is high. According to the invention, the device can have proper hole transport capability and exciton blocking capability, and the organic functional layers can be well matched, so that the performances such as driving voltage, luminous efficiency and service life can be well improved.
本发明属于有机电致发光技术领域,具体涉及一种有机电致发光器件。本发明提供的有机电致发光器件的空穴传输区域包括至少两层空穴传输层,其中一层空穴传输层中含有式(I)所示化合物中的一种,其中另一层空穴传输层中含有式(II)所示化合物中的一种,采用上述层结构的空穴传输区域,能够使器件具有恰当的空穴传输能力和激子阻挡能力,并且各个有机功能层之间能够很好地匹配,使驱动电压、发光效率和使用寿命等性能得到很好地改善。
Organic light-emitting device
一种有机电致发光器件
2024-03-08
Patent
Electronic Resource
Chinese
IPC: | H10K |
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