University of Michigan

University of Southern California

Chan Ho Soh

Stephen R Forrest

Mark Edward Thompson

Muazzam Idris

Karim El Roz

Abegail Tadle

Daniel Sylvinson Muthiah Ravinson

An optoelectronic device comprises a first electrode; a first host material layer positioned over the first electrode; a second host material layer positioned over the first host material layer; at least one ultrathin dopant layer positioned between the first and second host material layers, the at least one ultrathin dopant layer having a thickness of less than 2 Å; and a second electrode positioned over the second host material layers. Other organic optoelectronic devices are also disclosed.

Optoelectronic device including ultrathin dopant layers

A hybrid emissive layer and OLED incorporating the same are provided. The hybrid emissive layer includes a first material having a triplet state energy level T1and a singlet state energy level S1, a second material having a triplet state energy level T1and a singlet state energy level S1; and a third material having a triplet state energy level T1and a single state energy level S1, where T1T1; S1S1; and T1<T1.

OLED with hybrid emissive layer

An OLED device comprises an anode and a cathode, and at least one graded emissive layer disposed between the anode and the cathode, the graded emissive layer comprising first and second materials, wherein a concentration of the first material increases continuously from an anode side of the graded emissive layer to a cathode side of the graded emissive layer, and a concentration of the second material decreases continuously from the anode side of the graded emissive layer to the cathode side of the graded emissive layer. An OLED device comprising a graded emissive layer and a hybrid white OLED device are also described.

Hybrid organic light emitting device

Growing community of inventors

Ann Arbor, MI, United States of America

Chan Ho Soh