Organische Elektrolumineszenzvorrichtung

Details

Veröffentlichungs-Nr.

EP3651224

Aktenzeichen

EP19203711

Anmeldetag

16. Oktober 2019

Veröffentlichung

29. Januar 2025

Erteilung

29. Januar 2025

Rechtsraum

EP

IPC

H10K50/11H10K50/13H10K50/15H10K50/16H10K59/35// H10K85/60

Abstract

An organic electroluminescence device includes a first electrode, a hole transport region disposed on the first electrode, a first emission layer disposed on the hole transport region and including a first light-emitting host and a first light-emitting dopant, a second emission layer disposed on the first emission layer and including a first electron transport material and a second light-emitting dopant, an electron transport region disposed on the second emission layer and including a second electron transport material, and a second electrode disposed on the electron transport region, wherein a triplet energy of the first light-emitting host (T1<a>), a triplet energy of the second light-emitting dopant (T1<b>) and a triplet energy of the second electron transport material (T1<c>) satisfy a relation of T1<a> < T1<b> < T1<c>. High emission efficiency may be shown.

Anmelder

Firma

Samsung Display Co., Ltd.

Land

🇰🇷 Südkorea

Fachgebiete