有機エレクトロルミネッセンス素子

Title:

有機エレクトロルミネッセンス素子

Document Type and Number:

Japanese Patent JP4287198

Kind Code:

B2

Abstract:

An organic electroluminescence element comprising: an anode; a first emitting layer comprising at least a first host material and a first dopant; a second emitting layer comprising at least a second host material and a second dopant; and a cathode in the order mentioned: wherein the energy gap Egh1 of the first host material, the energy gap Egd1 of the first dopant, the energy gap Egh2 of the second host material, and the energy gap Egd2 of the second dopant satisfy the following formulas; and the luminescent intensity I1 at the maximum luminescent wavelength of an emission spectrum derived from the first emitting layer, and the luminescent intensity I2 at the maximum luminescent wavelength of an emission spectrum derived from the second emitting layer satisfy the following formula: Egh1 > Egd1 Egh2 > Egd2 Egd1 > Egd2 I1 > 3.5 x I2.

Inventors:

Fukuoka Kenichi
Masahide Matsuura
Hiroshi Yamamoto
Hosokawa local tide

Application Number:

JP2003152276A

Publication Date:

July 01, 2009

Filing Date:

May 29, 2003

Export Citation:

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