Organic compounds and organic electroluminescent device including the same

1 . An organic electroluminescent device, comprising:

a first electrode;

a second electrode facing away the first electrode;

a first light emission sub-stack interposed between the first electrode and the second electrode; and

a second light emission sub-stack stacked on the first light emission sub-stack,

wherein the first light emission sub-stack includes a first light-emitting organic layer, the first light-emitting organic layer containing a first host material and a dopant material,

wherein the second light emission sub-stack includes a second light-emitting organic layer,

the first light-emitting organic layer is a blue light-emitting material layer, wherein an emission wavelength from the blue light-emitting material layer is in a range of 440 nm to 480 nm,

wherein the first host material includes a compound selected from the group consisting of:

2 . The organic electroluminescent device of claim 1 , wherein the dopant material includes a blue dopant.

3 . The organic electroluminescent device of claim 2 , wherein blue dopant does not include a pyrene-based compound.

4 . The organic electroluminescent device of claim 1 , wherein the second light-emitting organic layer renders red (R), green (G), blue (B), or a yellow-green (YG).

5 . The organic electroluminescent device of claim 1 , wherein the organic electroluminescent device further includes a charge-generating layer disposed between the first light emission sub-stack and the second light emission sub-stack.

6 . The organic electroluminescent device of claim 1 , wherein the organic electroluminescent device includes a third light emission sub-stack stacked on the second light emission sub-stack, wherein the third light emission sub-stack includes a third light-emitting organic layer.

7 . The organic electroluminescent device of claim 6 , wherein the third light-emitting organic layer renders same colors as the first light-emitting organic layer or the second light-emitting organic layer.

8 . The organic electroluminescent device of claim 6 , wherein the third light-emitting organic layer renders red (R), green (G), blue (B), yellow (Y), or a yellow-green (YG).

9 . The organic electroluminescent device of claim 6 , wherein the organic electroluminescent device further includes a first charge-generating layer disposed between the first light emission sub-stack and the second light emission sub-stack; and a second charge-generating layer disposed between the second light emission sub-stack and the third light emission sub-stack.

10 . The organic electroluminescent device of claim 6 , wherein the third light-emitting organic layer comprises a third host material, and the third host material includes a compound represented by the following Chemical Formula 1:

wherein Y denotes a substituent represented by the following Chemical Formula 2:

wherein: X is O or S,

n is an integer of 0 to 4, and

m is an integer of 0 to 3,

wherein L 1 is selected from the group consisting of a direct bond, a substituted or unsubstituted arylene group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroarylene group having 6 to 30 ring constituting atoms, a substituted or unsubstituted alkylene group having 2 to 10 carbon atoms, a substituted or unsubstituted cycloalkylene group having 2 to 10 carbon atoms, a substituted or unsubstituted alkenylene group having 2 to 10 carbon atoms, a substituted or unsubstituted cycloalkenylene group having 2 to 10 carbon atoms, a substituted or unsubstituted heteroalkylene group having 2 to 10 carbon atoms, a substituted or unsubstituted heterocycloalkylene group having 2 to 10 carbon atoms, a substituted or unsubstituted heteroalkenylene group having 2 to 10 carbon atoms, and a substituted or unsubstituted heterocycloalkenylene group having 2 to 10 carbon atoms,

wherein L 2 is a direct bond,

wherein Ar 1 is selected from the group consisting of a deuterium substituted aryl group having 6 to 30 carbon atoms, a deuterium substituted heteroaryl group having 3 to 30 carbon atoms, a deuterium substituted alkyl group having 1 to 20 carbon atoms, a deuterium substituted cycloalkyl group having 1 to 20 carbon atoms, a deuterium substituted heteroalkyl group having 1 to 20 carbon atoms, a deuterium substituted heterocycloalkyl group having 1 to 20 carbon atoms, a deuterium substituted alkenyl group having 1 to 20 carbon atoms, a deuterium substituted cycloalkenyl group having 1 to 20 carbon atoms, and a deuterium substituted heteroalkenyl group having 1 to 20 carbon atoms,

wherein R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 , and R 10 are, at each occurrence, independently selected from the group consisting of hydrogen, deuterium, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 30 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 30 carbon atoms, a substituted or unsubstituted alkynyl group having 2 to 24 carbon atoms, a substituted or unsubstituted heteroalkyl group having 2 to 30 carbon atoms, a substituted or unsubstituted aralkyl group having 7 to 30 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroaryl group having 2 to 30 carbon atoms, and a substituted or unsubstituted heteroarylalkyl group having 3 to 30 carbon atoms, or wherein each occurrence of R 9 may, together with the carbon to which it is attached, join with an adjacent R 9 to form a ring, or wherein each occurrence of R 10 may, together with the carbon to which it is attached, join with an adjacent R 10 to form a ring, provided that at least one of R 1 to R 8 is deuterium, and

wherein each of R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 , R 10 , L 1 , and Ar 1 is independently substituted with at least one substituent selected from the group consisting of hydrogen, deuterium, a cyano group, a nitro group, a halogen group, a hydroxy group, a substituted or unsubstituted alkyl having 1 to 30 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 30 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 30 carbon atoms, a substituted or unsubstituted alkynyl group having 2 to 24 carbon atoms, a substituted or unsubstituted heteroalkyl group having 2 to 30 carbon atoms, a substituted or unsubstituted aralkyl group having 7 to 30 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or a heteroaryl group having 2 to 30 carbon atoms, a substituted or unsubstituted heteroarylalkyl group having 3 to 30 carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 30 carbon atoms, a substituted or unsubstituted alkylamino group having 1 to 30 carbon atoms, a substituted or unsubstituted arylamino group having 6 to 30 carbon atoms, a substituted or unsubstituted aralkylamino group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroarylamino group having 2 to 24 carbon atoms, a substituted or unsubstituted alkylsilyl group having 1 to 30 carbon atoms, a substituted or unsubstituted arylsilyl group having 6 to 30 carbon atoms, and a substituted or unsubstituted aryloxy group having 6 to 30 carbon atoms.

11 . The organic electroluminescent device of claim 1 , wherein the second light-emitting organic layer does not render red (R).

12 . The organic electroluminescent device of claim 1 , wherein the second light-emitting organic layer does not render green (G).