| abstract |
The present invention discloses an organic electroluminescent device using an indene phosphine oxide-based amine derivative represented by the following formula (A), a hole transporting material and an electron blocking material as the electron transporting material, thereby lowering driving voltage and power consumption, The half-life can be increased. In the above, R 1 to R 5 , m, n, p, L and Ar are defined as described in the specification of the present invention. |