Semiconductor Energy Laboratory Co., Ltd.

Ryo Narukawa

Satoshi Seo

Nobuharu Ohsawa

Harue Osaka

Takeyoshi Watabe

Airi Ueda

Yuta Kawano

Shiho Nomura

Keito Tosu

A light-emitting device with high emission efficiency is provided. The light-emitting device includes an anode, a cathode, and an EL layer positioned between the anode and the cathode. The EL layer includes a light-emitting layer and an electron-transport layer; the light-emitting layer includes a light-emitting material; the electron-transport layer includes an organic compound having an electron-transport property and a metal complex of an alkali metal; the ordinary refractive index of the organic compound having an electron-transport property in a peak wavelength of light emitted from the light-emitting material is greater than or equal to 1.50 and less than or equal to 1.75; and the ordinary refractive index of the metal complex of an alkali metal in the peak wavelength of the light emitted from the light-emitting material is greater than or equal to 1.45 and less than or equal to 1.70.

Light-emitting device including organic compound and metal complex

Growing community of inventors

Kanagawa, Japan

Ryo Narukawa