Preparation method of doped blue light organic light-emitting diode

• Main Authors: TONG SHICHENG, WANG HAOJIE, ZHU YOUCHENG, LU CHENGDONG, YUAN QIAN, CHEN BO
• Format: Patent
• Language: Chinese; English
• Published: 01.08.2023
• Subjects: ELECTRICITY

The invention provides a preparation method of a doped blue light organic light-emitting diode, which comprises an ITO anode glass plate, a light and thin hole injection layer is evaporated on the surface of the ITO anode glass plate, a hole transport layer is evaporated on the surface of the light and thin hole injection layer in vacuum, and a doped blue light subject-object common light-emitting layer is evaporated on the surface of the hole transport layer in vacuum. Two different electron transport layers are formed on the surface of the doped blue light host-guest common light-emitting layer through vacuum evaporation, and metal cathodes are formed on the surfaces of the electron transport layers through vacuum evaporation; according to the invention, the thermally activated delayed fluorescence material with the characteristic of reverse intersystem crossing is used as the material of the light-emitting layer, and the constituent elements are safe and pollution-free; the TADF material can generate a rev