Organic light-emitting device emitting delayed fluorescence
AssigneeSamsung Display Co., Ltd.
InventorsYounsun Kim, Seulong Kim, Dongwoo Shin, Jungsub Lee, Naoyuki Ito
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Abstract
An organic light-emitting device includes a first electrode; a second electrode facing the first electrode; and an emission layer between the first electrode and the second electrode, the emission layer including a dopant, a first host, and a second host. The dopant is a delayed fluorescence emitting material, and a triplet energy of the first host, EH1(T1) and a triplet energy of the second host, EH2(T1) are each equal to or greater than a triplet energy of the dopant, ED(T1). The triplet energy of the first host, EH1(T1) is in a range of about 2.6 eV to about 3.1 eV.
Claims13
An organic light-emitting device comprising:
- a first electrode;
- a second electrode facing the first electrode;
- and
- an emission layer between the first electrode and the second electrode, the emission layer comprising a dopant, a first host, and a second host,
- wherein the dopant comprises a delayed fluorescence emitting material,
- a triplet energy of the first host, EH1(T1), and a triplet energy of the second host, EH2(T1), are each equal to or greater than a triplet energy of the dopant, ED(T1), and
- the triplet energy of the first host, EH1(T1) is in a range of about 2.6 eV to about 3.1 eV.
Dependencies are inferred from the claim text.