US 12,356,793 B2
Light-emitting device having composite material layer including titanium dioxide nanoparticle bonded to sulfur ion of amino acid
Panning Huang, Huizhou (CN); and Zizhe Lu, Huizhou (CN)
Assigned to TCL TECHNOLOGY GROUP CORPORATION, Huizhou (CN)
Filed by TCL TECHNOLOGY GROUP CORPORATION, Huizhou (CN)
Filed on Jun. 14, 2022, as Appl. No. 17/840,208.
Application 17/840,208 is a continuation of application No. PCT/CN2020/138807, filed on Dec. 24, 2020.
Claims priority of application No. 201911423809.4 (CN), filed on Dec. 31, 2019.
Prior Publication US 2022/0310961 A1, Sep. 29, 2022
Int. Cl. H10K 50/165 (2023.01); H10K 30/15 (2023.01); H10K 50/125 (2023.01); H10K 71/00 (2023.01); H10K 102/00 (2023.01); H10K 102/10 (2023.01)
CPC H10K 50/165 (2023.02) [H10K 30/151 (2023.02); H10K 50/125 (2023.02); H10K 71/00 (2023.02); H10K 2102/102 (2023.02); H10K 2102/103 (2023.02); H10K 2102/331 (2023.02)] 8 Claims
OG exemplary drawing
 
1. A light-emitting device comprising:
a first electrode and a second electrode arranged oppositely to each other;
a light-emitting layer arranged between the first electrode and the second electrode; and
a composite material layer arranged between the second electrode and the light-emitting layer, a material for forming the composite material layer including a titanium dioxide nanoparticle and a ligand, the ligand having a structure of

OG Complex Work Unit Chemistry
the ligand being bonded to the titanium dioxide nanoparticle by a sulfur anion, and n being an integer of 0˜8;
wherein a mass percentage of the ligand with respect to a total mass of the composite material layer ranges from 0.5 to 2%.