Enhanced Polymer Light-Emitting Diode Performance Using a Crosslinked-Network Electron-Blocking Interlayer


  • We thank the U. S. Display Consortium and the NSF-MRSEC program through the Northwestern Materials Research Center (DMR-0076097) for support of this research.


original image

Effective electron-blocking layers (EBLs) for multilayer polymer light-emitting diodes (PLEDs) have been made by placing a crosslinked network of siloxane and hole-transporting polymers onto PLED anodes. These EBLs resulted in dramatic performance enhancement of conventional, lectron-dominated PLED devices: the maximum current efficiency increased tenfold to over 17 cd/A, clearly a result of the effectiveness of the EBL.