| 摘要 |
PURPOSE: An organic electroluminescence device using an electron transport material is provided to improve luminescence efficiency. CONSTITUTION: An electron transport material is denoted by the chemical formula. In the chemical formula, R1 is selected from substituted or non-substituted heterocyclic compounds, R_2 and R_3 are respectively selected from substituted or non-substituted aromatic compounds or substituted or non-substituted heterocyclic compounds. R_1 is pyridine, quinoline, or benzothiazole. An organic electroluminescence device comprises a first electrode, a second electrode, and a luminescent material layer which is placed between the first and second electrodes and comprises a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, and an electron injection layer, and the electron infection layer is denoted by the chemical formula. |
