| 摘要 |
PURPOSE: A cyclopentafluorene-based compound is provided to have excellent quantum efficiency when applied to a fluorescent device of phosphorescence device, etc, and to prevent crystallization when forming a membrane, thereby capable of providing thermal stailbity. CONSTITUTION: A cyclopentafluorene-based compound is represented by chemical formula 1. An organic electroluminescence device comprises a first electrode, a second electrode formed to face with the first electrode, and an organic material layer formed between the first electrode and the second electrode. The organic material layer comprises the cyclopentafluorene-based compound. The organic electroluminescence device comprises the first electrode, the second electrode, a light-emitting layer, a hole transport layer, and an electron transport layer. The light-emitting layer comprises host and dopant and the hole transport layer comprises the cyclopentafluorene-based compound. |
