论文标题
振动频率用作内部时钟参考以获取分子 - 金属电荷传输时间
Vibrational Frequency used as Internal Clock Reference to access Molecule -- Metal Charge Transfer Times
论文作者
论文摘要
分子 - 金属接口处的动力电荷传输过程以几个FS时间尺度进行，这使它们与光电设备中的电子激发高度相关。但是，当认为电子基态情况将电荷转移直接在费米能量上牵涉时，其知识是有限的。在这里，我们表明可以通过振动激发访问此类过程，并具有非绝热的电子 - 荧光元素耦合，从而导致不同的不对称线形状。因此，可以使用振动振荡周期作为内部时钟参考来得出此界面动力电荷传输的特征时间尺度。
Dynamical charge transfer processes at molecule-metal interfaces proceed in the few fs time scale that renders them highly relevant to electronic excitations in optoelectronic devices. Yet, knowledge thereof is limited when electronic ground state situations are considered that implicate charge transfer directly at the fermi energy. Here we show that such processes can be accessed by means of vibrational excitations, with non-adiabatic electron-vibron coupling leading to distinct asymmetric line shapes. Thereby the characteristic time scale of this interfacial dynamical charge transfer can be derived by using the vibrational oscillation period as an internal clock reference.
