Samsung Display Co., Ltd.

Hyerim Kim

Jaehyun Lee

Mikyung Kim

Jihyun Seo

Jiwon Kwak

Hanbyul Jang

A light-emitting device includes: a first electrode; a second electrode facing the first electrode; and an interlayer disposed between the first electrode and the second electrode and having an emission layer, wherein the interlayer includes: i) a hole transport region disposed between the first electrode and the emission layer; and ii) an electron transport region disposed between the emission layer and the second electrode; wherein: the emission layer includes three or more hosts; the electron transport region includes a buffer layer; the three or more hosts include a hole transport host, a first electron transport host, and a second electron transport host; the buffer layer includes a third electron transport host; and a lowest unoccupied molecular orbital energy level of the second electron transport host is substantially equal to a lowest unoccupied molecular orbital energy level of the third electron transport host.

Growing community of inventors

Yongin-si, South Korea

Hyerim Kim