| abstract |
The invention relates to the field of organic electroluminescence, and more particularly, to a blue-light organic electroluminescence device with high efficiency and long life. It comprises an anode, a cathode and an organic layer, the organic layer at least comprises a blue light emitting layer and a layer of electron transport layer, and the blue light emitting layer and the electron transport layer are used in combination; wherein at least one blue light emitting layer comprises the following formula 1 The host material shown and the TADF material shown in formula 2, at least one electron transport layer contains the compound shown in formula 3. |