Kunshan Go-visionox Opto-electronics Co., Ltd.

Kunshan New Flat Panel Display Technology Center Co., Ltd.

Chao Min

Weiwei Li

Song Liu

Fei Zhao

Shengfang Liu

Wei Ao

Zhizhong Luo

Xiuqi Huang

Lei Xu

Xiaoyu Gao

Jingwen Tian

Yucheng Liu

The present disclosure discloses an organic light-emitting device, which includes a first electrode and a hole injection layer laminated with each other and formed an ohmic contact therebetween. The hole injection layer is characterized by a carrier mobility of less than 2&#xd7;10CMVS.

Organic light-emitting devices

The present disclosure relates to an organic electroluminescent device and a preparation method thereof. The organic electroluminescent device includes a hole injection layer including a first doped layer and/or a second doped layer. The first doped layer includes a P-type dopant, and the second doped layer includes a P-type dopant and a hole transport material. The organic electroluminescent device includes a hole transport layer formed on the hole injection layer, and an electron blocking layer formed on the hole transport layer. A difference in HOMO energy level between the electron blocking layer and the hole transport layer is less than or equal to 0.2 eV. The power consumption of the organic electroluminescent device can be reduced. The lifetime of the mass production device therefore can be increased.

Organic electroluminescent devices and preparation methods thereof

The present application provides an organic electroluminescent device and a manufacturing method thereof. A host material of a light-emitting layer of the organic electroluminescent device is co-evaporated by a donor host material and a acceptor host material in a same evaporation source to form an exciplex, which solves the technical problems such as low luminous efficiency, short service life or complicated operation process of the organic electroluminescent device in the prior art. The organic electroluminescent device according to the present application includes an anode, a cathode and a light-emitting layer disposed between the anode and the cathode, a host material of the light-emitting layer is formed by premixing a donor host material and a acceptor host material, the donor host material and the acceptor host material are co-evaporated in a same evaporation source to form an exciplex, and the host material is doped with a guest material.

Organic electroluminescent device and manufacturing method thereof

An electrode and an organic electroluminescent device using the same are provided. The electrode comprises a first conductive layer (), a second conductive layer () and a third conductive layer () that are arranged in a stacked manner The second conductive layer () has a single-layer structure or multi-layer composite structure formed by at least one of alkali earth metal, alkali earth metal alloy and alkali earth metal compound, and the third layer () has a work function of less than 3 eV. The respective conductive layers of the electrode can compensate with respect to the defects in one another, thereby making the performance of the electrode more stable. In the meantime, because the work function of the third conductive layer () is less than 3 eV, the barrier of organics-metal interface can be effectively reduced for guiding the electron injection, thereby increasing the light-emitting efficiency of device. Also, because the electrode has relatively good transmittance, it can be used as a transparent electrode.

Electrode and organic electroluminescent device using same

An electrode and an organic electroluminescent device using the same are provided. The electrode includes a first layer () and a second layer () arranged in a stacked manner. The first layer () is an alkaline earth metal alloy layer and the second membrane () has a work function of 2.0 eV to 3.5 eV.

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Kunshan, China

Chao Min