Title :
Properties of light-emitting diodes fabricated from self-assembled multilayer heterostructures of poly(p-pyridyl vinylene)
Author :
Onoda, Mitsuyoshi ; Nakayama, Hiroshi ; Oshino, Katsumi Y.
Author_Institution :
Dept. of Electr. Eng., Himeji Inst. of Technol., Hyogo, Japan
Abstract :
Heterostructure multilayer thin films of electroactive polymers such as protonated poly(p-pyridyl vinylene), PHPy V, and sulfonated polyaniline, SPAn, have been successfully fabricated via a process based on the spontaneous self-assembly of conjugated poly-ions on to a substrate. The heterostructure thin films formed from these different polymers exhibited a perfectly linear relationship between the absorbance and the number of SPAn/PHPy V bilayers deposited. A greenish-yellow electroluminescent (EL) diode utilizing SPAn/PHPy V multilayer thin films has been demonstrated and the EL properties of this device are discussed. These results can be interpreted in terms of the confinement effect of carriers in the superlattice structure consisting of the SPAn/PHPy V multilayer system
Keywords :
current density; light emitting diodes; polymer films; superlattices; visible spectra; absorbance; carrier confinement effect; conjugated poly-ions; current density; electroactive polymers; greenish-yellow electroluminescent diode; heterostructure multilayer thin films; light-emitting diodes; optical absorption spectrum; poly(p-pyridyl vinylene); protonated poly(p-pyridyl vinylene); self-assembled multilayer heterostructures; spontaneous self-assembly; sulfonated polyaniline; superlattice structure; Absorption; Chemicals; Electrostatic self-assembly; Light emitting diodes; Nonhomogeneous media; Optical films; Organic light emitting diodes; Polymer films; Sputtering; Substrates;
Conference_Titel :
Properties and Applications of Dielectric Materials, 1997., Proceedings of the 5th International Conference on
Conference_Location :
Seoul
Print_ISBN :
0-7803-2651-2
DOI :
10.1109/ICPADM.1997.617663
