Kyushu University

Kyulux, Inc.

Takahiro Higuchi

Chihaya Adachi

Hajime Nakanotani

Taro Furukawa

An organic electroluminescent device having an anode, a cathode, and a light emitting layer between the anode and the cathode, in which the light emitting layer contains a first organic compound, a second organic compound, and a third organic compound that satisfy the following expression (A), the second organic compound is a delayed fluorescent material, and the third organic compound is a light emitting material, is capable of enhancing the light emission efficiency. E(A), E(B) and E(C) represent a lowest, singlet excitation energy level of the first, second and third organic compound, respectively.E(A)>E(B)>E(C)  (A)

Organic electroluminescent device

An organic electroluminescent device having an anode, a cathode, and a light emitting layer between the anode and the cathode, in which the light emitting layer contains a first organic compound, a second organic compound, and a third organic compound that satisfy the following expression (A), the second organic compound is a delayed fluorescent material, and the third organic compound is a light emitting material, is capable of enhancing the light emission efficiency. E(A), E(B) and E(C) represent a lowest singlet excitation energy level of the first, second and third organic compound, respectively.()&#x3e;()&#x3e;()&#x2003;&#x2003;(A)

An organic light-emitting device having a layercontaining a delayed blue fluorescent material, a layercontaining separately or together a green fluorescent material and a red fluorescent material, and a spacer layerarranged between the layerand the layercan efficiently emit white color.

Growing community of inventors

Fukuoka, Japan

Takahiro Higuchi