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Vardeny, Zeev Valentine | Excitation dynamics in single molecular crystals of α-hexathiophene from femtosecond to millisecond | We identify odd- and even-parity states and measure transient photomodulation spectra of Frenkel excitons in a-hexathiophene single crystals. The lowest Frenkel excitons are characterized by a stimulated emission band at ~2 eV and an absorption band at 1.3 eV. Intramolecular internal conversion go... | Excitation dynamics; alpha-hexathiophene; Frenkel excitons; pi-conjugated polymers; Photoexcitation | 2001-04 |
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