Solution-processed organic light-emitting diodes with enhanced efficiency by using a non-conjugated polymer doped small-molecule hole-blocking layer†
Abstract
The small-molecule hole-blocking material SPPO13 has been doped with a non-conjugated polymer to act as the hole-blocking layer in solution-processed OLEDs. Such a doping strategy can significantly improve the electron injection in devices, resulting in an enhanced luminous efficiency and a reduced turn-on voltage.