Light trapping and energy transfer at metal-semiconductor heterostructures

在这项研究中，我们研究了ZnO量子威尔斯和金属纳米结构中的局域等离子体激元的时间分辨光致发光光谱（TRPL）的激子之间的动态共振。这项工作澄清了量子威尔斯中局域等离子体激元和激子之间的光学相互作用。TRPL实验表明量子威尔斯与金属之间存在能量转移，表明量子威尔斯上形成的金属纳米结构对激子复合过程有显著影响。能量传递的时间常数和空间相关性分别为1.2ns-1和40 nm。

In this study, we investigated dynamic resonance between excitons in ZnO quantum wells and localized plasmons in metal nanostructures using time-resolved photoluminescent spectroscopy (TRPL). This work cleared optical interactions between localized plasmons and excitons in quantum wells. The TRPL experiments demonstrated that energy transfer between quantum wells and metals, which indicated that excitonic recombination processes were markedly affected by metal nanostructures formed on the quantum wells. A time constant and spatial correlation of energy transfer were 1.2 ns-1 and40 nm, respectively.