[The study of electroplex emission based on PVK/BCP].
Electroplex emission based on poly(N-vinylcarbazole) (PVK) and 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline (BCP) has been studied. A emission peak at 595 nm was observed in EL spectrum but not in PL spectra in the devices. The emission originates from the transition between the excited state of BCP and the ground state of PVK. Because of the increase of emission zone, the device of PVK: BCP blend exhibited stronger electroplex emission. The emission of electronplex was enhanced for both of PVK/BCP double layer device and PVK:BCP blend device, and it is stronger for blend devices. At higher drive voltage, only electroplex emission was observed in the blend device.
Teng
Feng
F
Institute of Optoelectronic Technology, Beijing Jiaotong University, Key Laboratory for Information Storage, Displays and Materials, Beijing 100044, China.
Wang
Yuan-Min
YM
Xu
Zheng
Z
Wang
Yong-Sheng
YS
D000465:Algorithms; D055664:Electrochemical Techniques / Q000295:instrumentation / Q000379:methods*; D049449:Luminescence; D015394:Molecular Structure; D010618:Phenanthrolines / Q000737:chemistry*; D055585:Physical Phenomena; D011145:Polyvinyls / Q000737:chemistry*; D013053:Spectrophotometry / Q000295:instrumentation / Q000379:methods*
D010618:Phenanthrolines; D011145:Polyvinyls; C035125:poly-N-vinylcarbazole; C002478:bathocuproine