Molecules on Surfaces as Photon Emitters

该项目的目的是研究和控制吸附在宽带隙材料（wide band gap materials，简称wide band gap materials）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形状和分子聚集体的形态的微观理解，例如，岛屿、集群和电影。目标是：（a）理解确定这种表面上分子发光的特定物理机制，（B）建立荧光光谱学作为跟踪表面上吸附分子的动力学过程的工具（例如，表面扩散、旋转、聚集体的形成），以及（c）将荧光耦合到结构化介电基底，例如由介电材料制成的微腔（与项目C2一起）。合适的宽带隙材料例如是，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).