A new white organic light emitting diode(WOLED) was constructed by sandwiching an exciton blocking layer(EBL) between the emitting layer(EML) and the electron-injection layer.

通过在发光层（EBL）与电子注入层之间增加激子阻挡层（EBL）制备了新型白色有机发光器件（WOLED）。