US 12,396,319 B2
Organic light-emitting device, light-emitting substrate and light-emitting apparatus
Rongrong Gao, Beijing (CN); and Lei Chen, Beijing (CN)
Assigned to BOE Technology Group Co., Ltd., Beijing (CN)
Appl. No. 17/626,147
Filed by BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
PCT Filed Jan. 4, 2021, PCT No. PCT/CN2021/070101
§ 371(c)(1), (2) Date Jan. 11, 2022,
PCT Pub. No. WO2022/141621, PCT Pub. Date Jul. 7, 2022.
Prior Publication US 2023/0232651 A1, Jul. 20, 2023
Int. Cl. H10K 50/16 (2023.01); H10K 50/15 (2023.01); H10K 50/18 (2023.01); H10K 85/40 (2023.01); H10K 85/60 (2023.01); H10K 101/30 (2023.01)
CPC H10K 50/166 (2023.02) [H10K 50/15 (2023.02); H10K 50/18 (2023.02); H10K 50/181 (2023.02); H10K 85/40 (2023.02); H10K 85/654 (2023.02); H10K 85/6572 (2023.02); H10K 85/6574 (2023.02); H10K 85/6576 (2023.02); H10K 85/658 (2023.02); H10K 2101/30 (2023.02)] 20 Claims
 
1. An organic light-emitting device, comprising:
an anode, an emitting layer and a cathode that are stacked;
a first functional material layer located between the emitting layer and the anode; and
a second functional material layer located between the emitting layer and the cathode; and
under a same test condition, a hole mobility of a material of the first functional material layer being at least ten times an electron mobility of a material of the second functional material layer;
wherein the second functional material layer includes an electron transport layer and a hole blocking layer;
an electron mobility of a material of the electron transport layer is the same as an electron mobility of a material of the hole blocking layer; or, under a same test condition, the electron mobility of the material of the hole blocking layer is less than the electron mobility of the material of the electron transport layer; and
the material of the electron transport layer and the material of the hole blocking layer are each independently selected from compounds containing at least one heteroaryl which contains at least two N atoms.