シラシクロペンタジエン誘導体を用いた有機電界発光素子

Organic electroluminescent element using silacyclopentadiene derivative

Abstract

(57)【要約】 【課題】 電子輸送性に優れ、低電圧、高発光効率な有 機EL素子の提供。 【解決手段】 一般式[化1]で表されるシラシクロペ ンタジエン誘導体を用いた電界発光素子。 【化1】 (式中、X及びYは、独立に炭素数1〜6の炭化水素基 等、R 1 〜R 4 は、水素、ハロゲン、炭素数1〜6のア ルキル基等で、又はそれらが隣接した場合は(無)置換 の環が縮合した構造。) 【効果】 課題を実用的に解決し、フルカラーのフラッ トパネルディスプレーへの適用可能。
PROBLEM TO BE SOLVED: To obtain an organic electroluminescent element capable of providing light emission of a high brightness at a low voltage due to the excellence in electron transporting properties and useful as a full color flat panel display, etc., by using a specific silacyclopentadiene derivative as a component, etc., of a charge transporting layer. SOLUTION: This compound is represented by the formula [X and Y are each a 1-6C (un)saturated hydrocarbon group, an alkoxy, a (substituted)aryl, etc.; R1 to R4 are each H, a halogen, a (substituted)1-6C alkyl, an alkoxy, etc.] [e.g. 1,1-dimethyl-2,5-bis(2-trifluoromethylphenyl)-3,4-diphenylcyclopentadi ene] as a component, etc., of a charge transporting layer, a luminous layer or a positive hole blocking layer.

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