Organic electroluminescent device

一种有机电致发光器件

Abstract

The invention provides an organic electroluminescent device, which has the main technical characteristic that an inorganic hole electric potential barrier layer adopted between an organic luminous layer and a current carrier transmission layer can remarkably block off excessive current carriers from entering the luminous layer, and an inorganic electronic electric potential compensation layer is adopted between an organic electron transmission layer and a back electrode to speed up the transmission of minor current carriers and control the exciton transition. The organic electroluminescent device has the advantages of achieving the current carrier complex balance in a luminous area and improving the utilization rate of excitons so as to improve the luminous efficiency of a device. Simultaneously, through controlling the thickness of the inorganic electronic electric potential compensation layer, the electric field distribution, the current carrier distribution and the exciton distribution area in the device can be regulated and controlled. Besides, an inorganic material thin layer and an organic material form a good and controllable interface, thereby improving the operational stability and the service life of the device.
本发明提供一种有机电致发光器件,其主要技术特征是,在有机发光层和载流子传输层之间采用无机空穴电势阻挡层能显著阻挡过多载流子进入发光层,在有机电子传输层与背电极之间采用无机电子电势补偿层加速少数载流子传输,控制激子迁移。其优点是,可实现发光区域中的载流子复合平衡,提高激子利用效率,从而提高器件的发光效率。同时,通过控制无机电子电势补偿层的厚度可调控器件中的电场分布、载流子分布、激子分布区域。另外,无机材料薄层与有机材料形成良好、可控的界面,可提高器件操作的稳定性和寿命。

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    CN-105244446-AJanuary 13, 2016京东方科技集团股份有限公司, 鄂尔多斯市源盛光电有限责任公司Organic electroluminescent device, preparation method thereof and display device