Location of the lowest even parity excit
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C.J. Baker; O.M. Gelsen; D.D.C. Bradley
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Article
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1993
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Elsevier Science
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English
β 407 KB
We report the two-photon fluorescence excitation spectrum of poly(pphenylenevinylene) over the energy range 1.1-2.0 eV. The onset for two-photon fluorescence excitation is at 1.3 eV with a strong peak near I.475 eV. The peak locates the energy of the lowest even parity excited singlet at 2.95 eV, so