Functional 3D Photonic Films from Polymer Beads

这项提议的目标是开发用于可见光波长区域的功能的、结构的三维光子晶体的制备方法。为了执行这一任务，我们将以结晶的聚合物晶格的薄膜为模板，因为它们在结构方面相当灵活。同时，它们也是有趣的模型系统。在“Schwerpenkt”(6年)期间，我们将解决如下问题：(I)聚合物微珠的外延以产生异质结构，(Ii)三维缺陷的受控结合以及(Iii)光子结构中的光发射。这项工作的基础是合成各种功能化的单分散聚合物小球。它们的结晶方法将得到改进，重点是开发不同聚合物晶格的外延结晶方法以创建异质结构。将研究光子薄膜的结构/图案化方法(电子束、离子束和X射线光刻)以及无机模板或金属介电材料的形成，以在可见光区打开完整的光子带隙。在功能化方面，我们将特别致力于填充有机半导体(具有光子结构的有机LED)和可切换光子结构(橡胶结构，可以机械变形)。

It is the goal of this proposal to develop methods for the preparation of functional, structured three-dimensional photonic crystals for the use in the visible wavelength region. To perform this task we will template films of crystallized polymerlattices, because they are rather flexible with regard to structuring. At the same time they are interesting model systems. During the duration of the 'Schwerpunkt' (6 years) we will tackle problems like (i) the epitaxy of polymer beads to produce heterostructures, (ii) the controlled incorporation of threedimensional defects and (iii) light emission inside a photonic structure. The basis for this work is the synthesis of various functional monodisperse polymer beads. The methods for their crystallization will be improved with the emphasis on the development of methods for an epitactical crystallization of different polymerlattices to create heterostructures. Ways for structuring/patterning of the photonic films (e-beam, ion-beam and X-ray lithography) will be investigated as well as the formation of inorganic templates or metallodielectrics to open a full photonic bandgap in the visible region. With regard to functionalization we will especially work on the infilling with organic semiconductors (organic LEDs with a photonic structure) and on switchable photonic structures (rubbery constitution, which can be deformed mechanically).