论文标题
耦合等离子体表面（PLEXCITON）系统的吸收和光致发光特性
Absorption and photoluminescence properties of coupled plasmon-exciton (plexciton) systems
论文作者
论文摘要
Plexciton是新杂交能状态的形成，源自等离子体和激子之间的耦合。为了揭示激子和Plexciton的光学特性，我们开发了一个经典的振荡器模型来描述它们的行为。尤其是，理论上对耦合案例（即plexciton）进行了详细研究。在强耦合中，吸收光谱实现了电磁诱导的透明度。仔细分析了模式的分裂行为，分裂很大程度上取决于电子的有效数量和共振耦合。光致发光光谱表明，光谱形状几乎保持不变，以较弱的耦合，并改变了很大的耦合。激子强烈增强了激子的发射强度，对于一般情况，可以达到$ 10^{10} $的订单。我们还显示了我们的模型与已发布的实验之间的比较，以验证其有效性。这项工作可能有助于理解丛集的机制和新应用的开发。
Plexciton is the formation of new hybridized energy states originated from the coupling between plasmon and exciton. To reveal the optical properties of both exciton and plexciton, we develop a classic oscillator model to describe the behavior of them. Particularly, the coupling case, i.e., plexciton, is investigated theoretically in detail. In strong coupling, the electromagnetically induced transparency is achieved for the absorption spectra; the splitting behaviors of the modes are carefully analyzed, and the splitting largely depends on the effective number of the electrons and the resonance coupling; the photoluminescence spectra show that the spectral shapes remain almost unchanged for weak coupling and change a lot for strong coupling; the emission intensity of the exciton is strongly enhanced by the plasmon and can reach to the order of $10^{10}$ for a general case. We also show the comparisons between our model and the published experiments to validate its validity. This work may be useful for understanding the mechanism of the plexciton and for the development of new applications.
