Electrochemical Processing and Synthesis of Light Emitting Porous Silicon Structures

最近发现多孔硅结构 在室温下表现出强的可见光致发光。 这 程序侧重于多孔的结构-性能关系 硅。 多孔硅结构是通过化学方法形成的， 蚀刻过程;然而，很少有人知道如何 蚀刻参数控制多孔结构的形态 以及由此产生的发光特性。 计算机 蚀刻过程的模拟将用于开发一种 了解多孔结构的范围， 工艺参数的作用。 类似的多孔 将通过实验来检查结构。 的最终目的 该计划是发展结构相图 将微结构与工艺参数和发光相关联 特性. %%% 发光多孔硅将是一种廉价的替代品 其他光学材料，并允许与硅集成- 基于电子 该计划涉及材料加工 与多孔硅结构的制造相关的方面， 并努力描述和理解 结构和光学性质之间的关系。 该计划包括 多孔硅结构的合成， 结构/性能关系和理论建模的 成长过程

It has been discovered recently that porous silicon structures exhibit strong visible photoluminescence at room temperature. This program focuses on the structure-property relationships of porous silicon. Porous silicon structures are formed by a chemical etching process; however, very little is known about how the etching parameters control the morphology of the porous structures and the resultant light emitting characteristics. Computer simulations of the etching process will be used to develop an understanding of the range of porous structures attainable as a function of processing parameters. A similar range of porous structures will be examined experimentally. The ultimate aim of the program is the development of structural phase diagrams relating microstructure to processing parameters and light emitting properties. %%% Light emitting porous silicon would be an inexpensive alternative to other optical materials and allow for integration with silicon- based electronics. This program addresses materials processing aspects relevant to the fabrication of porous silicon structures, and strives to characterize and understand the relationships between structure and optical properties. The program includes the synthesis of porous silicon structures, experimental analysis of structure/property relationships and theoretical modeling of the growth processes.