SBIR Phase I: Synthesis of New Conjugated Polymers for Stimulated Emission of Light

*9660570贝最近，聚合物发光材料和器件的受激发射也引起了相当大的兴趣。基于微腔结构的聚合物发光二极管(LED)和利用发光共轭聚合物的光泵浦受激发射的新结果，现在人们的注意力集中在实现电泵浦聚合物激光二极管的努力上。然而，由于发光共轭聚合物缺乏足够高的光致发光效率或载流子迁移率(或两者兼而有之)的事实，这些努力受到了阻碍。在其他候选聚合物中，在发射区的波长处的自吸收、光诱导吸收或电诱导吸收阻止了任何受激发射。在这个第一阶段的提案中，概述了一系列发光共轭聚合物的合成，作为根据明确定义的标准进行评估的候选对象。聚合物将被加工成高质量的薄膜，用于制造聚合物发光器件或研究光泵浦受激发射。基于“塑料”半导体的光电设备有望实现高效、低成本的设备，这种设备模仿无机半导体的功能，但享受塑料制造的好处：易于加工、机械灵活和经久耐用。紧凑型相干光源的市场很大，而且还在不断增长。***

*** 9660570 Pei Recently, stimulated emission from polymer light-emitting materials and devices has also been of considerable interest. Based on new results demonstrating both polymer light emitting diodes ( LEDs) in microcavity geometries and photo-pumped stimulated emission using luminescent conjugated polymers, attention has now focused on efforts to realize electrically pumped polymer laser diodes. These efforts are hindered, however, by the fact that the luminescent conjugated polymers which have been the subject of the most intense investigation lack either sufficiently high photoluminescent efficient or carrier mobility (or both). In other candidate polymers, self-absorption, photo-induced absorption, or electro-induced absorption at wavelengths in the emission region prevents any stimulated emission. In this Phase I proposal, the synthesis of a series of luminescent conjugated polymers as candidates for evaluation against well-defined criteria is outlined. The polymers will be processed into high quality thin films for use in the fabrication of polymer light-emitting devices or to investigate photopumped stimulated emission. Optoelectric devices based on "plastic" semiconductors promise efficient, low cost devices which mimic the function of inorganic semiconductors but enjoy the benefits of being made of plastic: easy processing , mechanically flexible and durable. The market for the compact coherent light sources is large and growing. ***