abstract |
The present invention discloses a indenotriphenylene-based amine derivative is represented by the following formula(A), the organic EL device employing the compound as hole transport material, electron blocking material, can lower driving voltage and power consumption, increasing efficiency and half-life time.n nWherein R 1 to R 5 , m, n, p, L and Ar are the same definition as described in the present invention. |