Organische elektrolumineszente Materialien und Vorrichtungen

Details

Veröffentlichungs-Nr.

EP2866273

Aktenzeichen

EP14189545

Anmeldetag

20. Oktober 2014

Veröffentlichung

18. Oktober 2017

Erteilung

18. Oktober 2017

Rechtsraum

EP

IPC

H01L51/54C07F15/00C07D403/04C07D403/10C07D471/04

Abstract

A composition formed of a first mixture of a first compound and a second compound wherein the first compound has different chemical structure than the second compound; the first compound is capable of functioning as a hole transporting material in an organic light emitting device at room temperature; the first compound comprises at least one carbazole group; the first compound has a evaporation temperature T1 of 150 to 350 °C; the second compound has evaporation temperature T2 of 150 to 350 °C; the absolute value of T1-T2 is less than 20 °C; the first compound having a concentration C1 in said first mixture, and the first compound having a concentration C2 in a film formed by evaporating the first mixture in a vacuum deposition tool at a constant pressure between 1x10 -6 Torr to 1x10 -9 Torr, at a 2Å/sec deposition rate on a surface positioned at a predefined distance away from the mixture being evaporated; and wherein the absolute value of (C1-C2)/C1 is less than 5%.

Anmelder

Firma

Universal Display Corporation

Land

🇺🇸 USA

Fachgebiete