The Mixing of Frenkel and Charge-Transfer Excited States I. General Treatment of Singlet and Triplet Excitations and Analytic Solutions of Simple Models

作者: P. Reineker , B. J. Schmid

DOI: 10.1002/PSSB.2221240225

关键词:

摘要: The mixing of Frenkel and charge-transfer excitons in molecular crystals dimers which may be formed by two identical or different molecules is discussed. Hamiltonian takes into account the kinetic potential energy electrons, their Coulomb spin—spin interaction, an external magnetic field. resulting consists a part for singlet diagonalized exactly some special cases analytical manner triplet excitons. fine-structure tensor latter expressed explicitlyin terms electronic matrix elements. Das Mischen von Frenkel- und Charge-Transfer-Exzitonen Molekulkristallen Dimeren, die aus zwei identischen oder verschiedenen Molekulen bestehen konnen, wird diskutiert. Der Hamiltonoperator berucksichtigt kinetische potentielle Energieder Elektronen, ihre Coulomb- Spin—Spin-Wechselwirkung Energie einem auseren Magnetfeld. resultierende besteht Teil fur Singuletterxzitonen, der einige spezielle Situationen exakt analytisch diagonalisiert wird, Triplettexzitonen. Feinstrukturtensor explizit durch elektronische Matrixelemente dargestellt.

参考文章(15)
Charles E. Swenberg, Martin Pope, Electronic Processes in Organic Crystals ,(1982)
H. Haken, Quanternfeldtheorie des Festkörpers Vieweg+Teubner Verlag. ,(1973) , 10.1007/978-3-322-96694-0
E.G. Petrov, V.M. Loktev, Yu.B. Gaididay, Exciton excitations of the antiferromagnetic dielectric and the electric moment of the double optical transitions Physics Letters A. ,vol. 30, pp. 432- 433 ,(1969) , 10.1016/0375-9601(69)90753-1
B. J. Schmid, P. Reineker, The Mixing of Frenkel and Charge-Transfer Excited States. II. Numerical Treatment of Non-Symmetric Dimers physica status solidi (b). ,vol. 125, pp. 593- 604 ,(1984) , 10.1002/PSSB.2221250219
Piotr Petelenz, Vedene H. Smith, Triplet exciton mobilities in weak donor-acceptor complexes Chemical Physics Letters. ,vol. 82, pp. 430- 433 ,(1981) , 10.1016/0009-2614(81)85413-9
B. J. Schmid, P. P. Reineker, On the theory of singlet and triplet charge-transfer excitons Physica Status Solidi B-basic Solid State Physics. ,vol. 117, pp. 117- 126 ,(1983) , 10.1002/PSSB.2221170112