Charge transfer mechanisms in organic crystals revealed by intermolecular vibrational excitations

在这个项目中，我们旨在研究声子模激发对有机晶体中激发态动力学的影响。我们研制了一种产生可变脉冲重复频率的飞秒脉冲序列的光学装置，以便以模式选择的方式激发声子模。我们将其应用于Rubrene晶体的单重态裂变过程，研究了声子激发对裂变率的影响。我们还研究了Rubrene晶体在裂变过程中的相干声子动力学。

In this project we aimed to study an effect of phonon mode excitation on an excited state dynamics in organic crystals. We have developed an optical set up that generates femtosecond pulse trains with variable pulse repetition rates in order to excite phonon modes with mode selective fashion. We applied it to singlet fission process in rubrene crystal and investigated the effect of the phonon excitations on the fission rates. We also studied a coherent phonon dynamics in rubrene crystal during the fission process.