The electron-blocking properties of poly(3,4-ethylenedioxythiophene)-poly(styrene sulfonic acid) (PEDOT-PSS), hole-transport layer (HTL) at the HTL/EML was analyzed. It was found that the electron-blocking capacity of PEDOT-PSS was significantly weaker than that of standard triarylamine electron-blockers. The triarylamine structures were modified to produce a family of crosslinkable, electron-blocking siloxanes yielding insoluble, adherent, crosslinked, triarylamine networks which functioned as efficient electron-blocking interlayers (EBLs) for multilayers polymer-based light emitting diodes (PLED). The results show that insertion of these EBLs between PLED, HTL and EML components can dramatically enhanced the device performance.
ASJC Scopus subject areas
- Materials Science(all)