Molecules on Surfaces as Photon Emitters

该项目的目的是研究和控制吸附在宽禁带材料（电介质）的微观光滑和清洁表面上的有机分子的荧光。这应该包括对分子的吸附几何和分子聚集体（如岛、簇和膜）的形态的微观理解。目标是：(a)了解决定这种表面上分子发光的具体物理机制，(b)建立荧光光谱作为跟踪表面上吸附分子动力学过程的工具（例如，表面扩散，旋转，聚集体的形成），以及(c)将荧光与结构介质衬底耦合，例如由介电材料制成的微腔（与C2项目一起）。合适的宽禁带材料是金属氧化物（Al2O3,MgO）。

The aim of the project is to investigate and control the fluorescence of organic molecules adsorbed on microscopically smooth and clean surfaces of wide band gap materials (dielectrics). This should include a microscopic understanding of the adsorption geometry of the molecules and the morphology of molecular aggregates, e.g., islands, clusters, and films. The objectives are: (a) to understand the specific physical mechanisms which determine the luminescence of molecules on such a surface, (b) to establish fluorescence spectroscopy as a tool to follow kinetic process of adsorbed molecules on surfaces (e.g., surface diffusion, rotation, formation of aggregates), and (c) to couple the fluorescence to structured dielectric substrates, e.g. microcavities made of dielectric materials (together with Project C2). Suitable wide band gap materials are, e.g., metal oxides (Al2O3,MgO).