Poly(p-phenylene vinylene) in light-emitting diodes: Nature of the lowest singlet and triplet excited states and effects of derivatization
- Universite de Mons-Hainaut, Mons (Belgium)
Poly(p-phenylene vinylene), PPV, has attracted a tremendous interest in the past few years, especially in the field of optic and electro-optic devices such as light-emitting diodes (LED`s). Here we focus our attention on three issues of prime importance when studying PPV (or its oligomers) as an emitting layer. The first topic deals with the modelling of the nature of the lowest singlet excited state (from which fluorescence originates) and of the lowest triplet excited states (also reached by the system following recombination of the charge carriers). In a second part, we analyze the way the optical transitions are affected by derivatization; we modulate the locations of the frontier levels by fixing {pi}-donor (methoxy) and {pi}-acceptor (cyano) substituents along the conjugated backbone. Finally, we investigate the metallization of the cyano-PPVs, by aluminum or alkali metals.
- OSTI ID:
- 126979
- Report Number(s):
- CONF-950402-; TRN: 95:006086-1064
- Resource Relation:
- Conference: 209. American Chemical Society (ACS) national meeting, Anaheim, CA (United States), 2-6 Apr 1995; Other Information: PBD: 1995; Related Information: Is Part Of 209th ACS national meeting; PB: 2088 p.
- Country of Publication:
- United States
- Language:
- English
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