	US 12,041,844 B2
	Organic light emitting device
Thomas Rosenow, Dresden (DE); and Markus Hummert, Dresden (DE)
Assigned to Novaled GmbH, Dresden (DE)
Appl. No. 17/284,511
Filed by Novaled GmbH, Dresden (DE)
PCT Filed Oct. 4, 2019, PCT No. PCT/EP2019/076882 § 371(c)(1), (2) Date Apr. 12, 2021, PCT Pub. No. WO2020/074379, PCT Pub. Date Apr. 16, 2020.
Claims priority of application No. 102018125307.9 (DE), filed on Oct. 12, 2018.
Prior Publication US 2021/0376258 A1, Dec. 2, 2021
Int. Cl. H01L 51/00 (2006.01); H10K 85/30 (2023.01); H10K 50/11 (2023.01); H10K 50/15 (2023.01); H10K 50/17 (2023.01); H10K 101/10 (2023.01)

CPC H10K 85/30 (2023.02) [H10K 50/11 (2023.02); H10K 50/15 (2023.02); H10K 50/17 (2023.02); H10K 2101/10 (2023.02)]

10 Claims

1. Organic light emitting device comprising:

(i) an anode;

(ii) a cathode;

(iii) at least one light emitting layer arranged between the anode and the cathode;

(iv) optionally a first hole injection layer comprising a first hole injection compound, the first hole injection layer being arranged between the anode and the light emitting layer and the hole injection layer being adjacent to the anode;

(v) a first hole transport layer comprising a first hole transport matrix compound, wherein the first hole transport layer is arranged

a) between the first hole injection layer and the light emitting layer and adjacent to the first hole injection layer; or

b) between the anode and the light emitting layer and adjacent to the anode;

(vi) a second hole injection layer arranged between the first hole transport layer and the light emitting layer, wherein the second hole injection layer is adjacent to the first hole transport layer and wherein the second hole injection layer comprises a second hole injection compound;

wherein the second hole injection compound is a halogenated fullerene, a partially or fully halogenated metal complex or a mixture thereof; and

the halogenated fullerene has the formula C_xF_ywherein x is an even integer from 60 to 120 and y is from x/2 to 4x/5.