This work was supported by the State 973 Project(Grant No.2002CB6 13405);the National Natural Science Foundation of China(Grant No.90201023).
High efficiency of near infrared polymer light-emitting diodes with bilayer structure was obtained. The diode structure is ITO/PEDOT/L1/L2/Ba/Al, where L1 is phenyl-substituted poly [p-phenylphenylene vinylene] de- ri...