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- W2024620120 abstract "The mixing between Frenkel excitons and charge-transfer states of a linear molecular crystal in an electric field is investigated. The Merrifield model is adopted. It is shown that the electric field increases the above mentioned mixing, leading therefore to an increase of the light absorption with simultaneous creation of an electron–hole pair. It also can change slightly the position of the Frenkel exciton absorption line. Semiempirical calculations of anthracene dimers in an electric field show that this effect should be observable at electric fields with strengths higher than 106 V/cm, the direction of the field being along the long c-axis of the anthracene crystal.Es wird die Mischung zwischen einem Frenkel-Exziton und Chargetransferzustanden in einem linearen Molekulkristall im elektrischen Feld untersucht, wobei das Modell von Merrifield angenommen wird. Es wird gezeigt, das das elektrische Feld die Mischung erhoht und zu einer Erhohung der Lichtabsorption fuhrt bei gleichzeitiger Bildung eines Elektron-Lochpaares. Es kann auch die Lage der Absorptionslinie des Frenkel-Exzitons leicht andern. Halbempirische Berechnungen von Anthrazendimeren im elektrischen Feld zeigen, das dieser Effekt bei elektrischen Feldstarken von groser als 106 V/cm beobachtbar sein sollte, bei einer Richtung des elektrischen Feldes in Richtung der langeren c-Achse des Anthrazenkristalls." @default.
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- W2024620120 title "Effect of electric field on mixing of Frenkel excitons and charge transfer states of a linear molecular crystal" @default.
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- W2024620120 doi "https://doi.org/10.1002/pssb.2220690115" @default.
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