| abstract |
An organic electroluminescence element comprising:nan anode layer, a cathode layer, and an organicnluminescence layer therebetween, the organic luminescencenlayer having a carbazole derivative with a glass-transitionntemperature of 110°C or higher, and anphosphorescent dopant. This structure makes it possiblento provide an organic electroluminescence element whichncan make use of the triplet exciton state of thencarbazole derivative even at room temperature and whichnhas a practical life and superior heat-resistance. |