A pyrimidine end-capped electron transport material interacted with silver for improving electron-injection and long-term stability in OLEDs

We developed a non-Phen electron-transporter named DPmPy-BP. With Ag as an air-stable EIL, DPmPy-BP exhibited superior electron-injection, achieving EQE of 20% and LT50 of 17 000 h at 1000 cd m −2 , outperforming the corresponding Phen/Ag device.