| abstract |
The present invention relates to a heterocyclic compound represented by the following chemical formulas 1 to 4 and an organic light-emitting device including the heterocyclic compound. The heterocyclic compounds represented by the above chemical formulas 1 to 4 have excellent luminescent properties, and are especially useful for blue fluorescence and green phosphorescence. Organic light-emitting devices with high efficiency, low voltage, high brightness and long life can be produced by using the above-mentioned heterocyclic compound. (For the description of R 1 to R 8 , A and X in the above chemical formulas 1 to 4, please refer to the relevant part of the detailed description). |