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- W2016377114 abstract "Dissociation of Frenkel excitons in the neighbourhood of a charged defect in anthracene crystals is investigated in relation to the recent experimental results of Fort and Coret. The trimer model is adopted, and the charge-transfer integral relevant to the exciton decay is calculated in a simple semiempirical scheme. The dissociation probability is found to be enhanced due to the interaction with a cationic defect. An alternative interpretation of the experimental results in terms of the mixing of the exciton and charge-transfer states is proposed. A possible role of both the mechanisms is discussed. Es wird die Dissoziation eines Frenkel-Exzitons in der Nähe eines geladenen Defekts in Anthra-zenkristallen im Hinblick auf kürzliche experimentelle Ergebnisse von Fort und Coret untersucht. Es wird das Trimer-Modell angenommen und das für den Exzitonenzerfall relevante Ladungsüber-gangsintegral mit einer einfachen halbempirischen Methode berechnet. Es wird gefunden, daß die Dissoziationswahrscheinlichkeit infolge der Wechselwirkung mit einer Kationenstörstelle vergrößert wird. Es wird eine Alternativinterpretation der experimentellen Ergebnisse durch Mischung von Exzitonen- und Charge-transfer-Zuständen vorgeschlagen. Die mögliche Rolle beider Mechanismen wird diskutiert." @default.
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- W2016377114 date "1977-05-01" @default.
- W2016377114 modified "2023-09-27" @default.
- W2016377114 title "Exciton Dissociation in the Electric Field of the Charged Defect" @default.
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- W2016377114 doi "https://doi.org/10.1002/pssb.2220810103" @default.
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