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RESEARCH PRODUCT
Excitons and nonlinear optical spectra in conjugated polymers.
Wu-pei SuS. AbeMichael SchreiberJ. Yusubject
chemistry.chemical_classificationMaterials sciencechemistryCondensed matter physicsExcitonCoulombPolymerSinglet stateConjugated systemAbsorption (electromagnetic radiation)Molecular physicsBiexcitonSpectral linedescription
Excitons in conjugated polymers are studied theoretically in the Su-Schrieffer-Heeger model supplemented by long-range Coulomb interactions. The relationship between exciton energies and basic interaction parameters is clarified. Linear and third-order nonlinear optical susceptibilities (two-photon absorption, electroabsorption, and third-harmonic generation) have been calculated, elucidating the significance of singlet and triplet excitons and unbound electron-hole pairs. Using only moderate interaction strength, various experiments in polydiacetylene can be interpreted in a consistent way
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1992-04-15 | Physical review. B, Condensed matter |