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US 2020/0028082 A1Published application
Organic electroluminescence device
AssigneeRohm and Haas Electronic Materials Korea Ltd.
InventorsDong-Hyung LEE, Tae-Jin LEE, Bitnari KIM
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Abstract
The present disclosure relates to an organic electroluminescence device. The organic electroluminescence device of the present disclosure comprises a specific combination of a host compound and a hole transport material which can provide excellent lifespan characteristics.
Claims8
An organic electroluminescence device comprising a first electrode;
- a second electrode facing the first electrode;
- an intermediate layer between the first electrode and the second electrode;
- wherein the intermediate layer comprises at least one layer of a hole transporting band and at least one layer of a light-emitting layer;
- wherein at least one layer of the hole transporting band comprises a compound represented by the following Formula 1;
- wherein at least one layer of the light-emitting layer comprises at least one dopant compound and at least one host compound;
- and the at least one host compound comprises a compound represented by the following Formula 2:
- wherein the Formulae 1 and 2,
- L, L1 and L2 each independently represent a single bond or a substituted or unsubstituted (C6-C30)arylene;
- Ar1 to Ar4 each independently represent a substituted or unsubstituted (C6-C30)aryl or a substituted or unsubstituted (3- to 30-membered)heteroaryl;
- R1 to R5 each independently represent hydrogen, deuterium, halogen, cyano, a substituted or unsubstituted (C1-C30)alkyl, a substituted or unsubstituted (C2-C30)alkenyl, a substituted or unsubstituted (C2-C30)alkynyl, a substituted or unsubstituted (C3-C30)cycloalkyl, a substituted or unsubstituted (C6-C30)aryl, a substituted or unsubstituted (3- to 30-membered)heteroaryl, a substituted or unsubstituted tri(C1-C30)alkylsilyl, a substituted or unsubstituted tri(C6-C30)arylsilyl, a substituted or unsubstituted di(C1-C30)alkyl(C6-C30)arylsilyl, a substituted or unsubstituted (C1-C30)alkyldi(C6-C30)arylsilyl, a substituted or unsubstituted mono- or di-(C1-C30)alkylamino, or a substituted or unsubstituted mono- or di-(C6-C30)arylamino;
- or may be linked to an adjacent substituent to form a ring of a substituted or unsubstituted, (C3-C30) mono- or polycyclic, alicyclic or aromatic ring, or the combination thereof, whose carbon atom may be replaced with at least one heteroatom selected from nitrogen, oxygen, and sulfur;
- m and n each independently represent an integer of 1 or 2;
- p, q, r, and t each independently represent an integer of 1 to 4;
- s represents an integer of 1 to 6;
- when m, n, p, q, r, s or t represents an integer of 2 or more, each of [L-(NAr1Ar2)n], each of (NAr1Ar2), each of R1, each of R2, each of R3, each of R4 or each of R5 may be the same or different;
- and
- the heteroaryl contains at least one heteroatom selected from B, N, O, S, Si, and P.
14 more elements
Dependencies are inferred from the claim text.