US 12,256,589 B2
Light-emitting element and method for manufacturing same
Yoshihiro Ueta, Sakai (JP)
Assigned to SHARP KABUSHIKI KAISHA, Sakai (JP)
Appl. No. 17/769,982
Filed by SHARP KABUSHIKI KAISHA, Sakai (JP)
PCT Filed Oct. 29, 2019, PCT No. PCT/JP2019/042282
§ 371(c)(1), (2) Date Apr. 18, 2022,
PCT Pub. No. WO2021/084597, PCT Pub. Date May 6, 2021.
Prior Publication US 2022/0359844 A1, Nov. 10, 2022
Int. Cl. H10K 30/80 (2023.01); H10K 71/00 (2023.01); H10K 102/00 (2023.01)
CPC H10K 30/865 (2023.02) [H10K 71/00 (2023.02); H10K 2102/351 (2023.02); H10K 2102/361 (2023.02)] 19 Claims
OG exemplary drawing
 
1. A light-emitting element comprising, in an order of listing:
an anode;
a hole transport layer;
an emission layer; and
a cathode,
the light-emitting element further comprising:
a reducing-material-containing layer disposed in at least a part between the anode and the hole transport layer, the reducing-material-containing layer being in contact with the anode and the hole transport layer, the reducing-material-containing layer containing a reducing material that reduces the hole transport layer, wherein
the reducing material contains, in a structure of the reducing material, hydrogen either at a concentration ratio of 1 to 1 with respect to a base metal, or at a larger concentration ratio than the base metal.