Change in quantum efficiency of self-assembled films based on PPV and ionic salt added PSS

Title
Change in quantum efficiency of self-assembled films based on PPV and ionic salt added PSS
Authors
조진한차국헌홍종달김동영
Keywords
poly(p-phenylene vinylene) (PPV); electroluminescence (EL); self-assembly method
Issue Date
2001-12
Publisher
Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals
Citation
VOL 371, 75-78
Abstract
Electrical characteristics of self-assembled devices based on Poly@- phenylene vinylene) (PPV), Poly(sodium 4-styrenesulfonate) (PSS) and carrageenan (CARRA) were investigated. Relative quantum efficiency of ITO/(PPV/PSS)&Al device was significantly decreased with the increase of ionic strength of the PSS solution. In contrast, the relative quantum efficiency of ITO/(PPVPSS)~(PPV/CARRA),~Ald evice prepared by inserting (PPV/CARRA)15 bilayers between the (PPV/PSS)5 film and Al electrode were increased with the increase of ionic strength in the PSS solution. The performance improvement of ITO/(PPV/PSS)J(PPV/CARM),&U device is believed to be due to the formation of a stable interface between the (PPV/CARRA) and the Al electrode as well as the enhancement of hole transporting characteristics of (PPVPSS) bilayers with added ion salt.
URI
http://pubs.kist.re.kr/handle/201004/16724
ISSN
1058-725X
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KIST Publication > Article
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