Excitons in Organic Molecular Crystals
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چکیده
منابع مشابه
The lowest energy Frenkel and charge-transfer excitons in quasi-one-dimensional structures: application to MePTCDI and PTCDA crystals
We consider the exciton states in quasi-one-dimensional organic crystals with strong orbital overlap between neighboring molecules. In such crystals, the energy dierence between the lowest Frenkel exciton and the nearestneighbor charge-transfer excitons becomes small and their strong mixing determines the nature of the lowest energy states. We discuss these eects for crystalline N ,N 0-dimeth...
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Submitted for the MAR14 Meeting of The American Physical Society Singlet fission in reduced dimensions of crystals PAUL TEICHEN, JOEL EAVES, The University of Colorado at Boulder — In some molecular systems the decay of an initially excited singlet into two independent triplets, a process called singlet fission, is highly efficient. Organic crystals are among the most promising candidates for i...
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We observe the diffusion anisotropy difference between singlet and triplet excitons in organic crystals; that is, singlet and triplet excitons may have completely different spatial direction preference for diffusion. This phenomenon can be ascribed to the distinct dependence of different excitonic couplings (Coulomb Förster vs. exchange Dexter) existing in singlet and triplet excitons on their ...
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