abstract |
An object of the present invention is to provide an organic electroluminescent device using an arylpyridine-iridium metal complex compound represented by the following Chemical Formula 1, which aims to greatly improve luminous efficiency and increase driving life and stability of the device.n n n n n n n n n n Wherein R 1 , R 2 , R 3 , R 4 , A and Ar are as defined in the specification. |