Solar and Photovoltaics Engineering Research Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia.
Nanoscale. 2016 Mar 14;8(10):5412-6. doi: 10.1039/c5nr05328e.
Efficient absorption of visible light and a long-lived excited state lifetime of silver nanoclusters (Ag29 NCs) are integral properties for these new clusters to serve as light-harvesting materials. Upon optical excitation, electron injection at Ag29 NC/methyl viologen (MV(2+)) interfaces is very efficient and ultrafast. Interestingly, our femto- and nanosecond time-resolved results demonstrate clearly that both dynamic and static electron transfer mechanisms are involved in photoluminescence quenching of Ag29 NCs.
银纳米团簇（Ag29 NCs）高效吸收可见光和长寿命激发态寿命是这些新簇作为光收集材料的基本特性。在光学激发下，Ag29 NC/甲基紫精（MV(2+)）界面的电子注入非常高效和超快。有趣的是，我们的皮秒和纳秒时间分辨结果清楚地表明，动态和静态电子转移机制都参与了 Ag29 NCs 的光致发光猝灭。
