XU Yi-she, CHEN Guo-ding, ZHOU Jin-yun. Impact of the Cathode Materials on the Performance of Polymer Light-emitting Devices[J]. 2004, 21(2): 12-15.DOI:
alkaline earth metals and insulated materials as the cathode
show different characteristics. Device with Ba(a thickness of about 3nm) as cathode shows better performance:the external quantum efficiency is 1.6%
and the highest light intensity is close to 4000cd/m~2.The result demonstrates the interface between PDOF-DBT and this kind cathode with good energetic contact