Synthesis and Spectroscopy of Ordered Material

在这个项目中，将研究激活的发光晶体材料的光激发态的静态和动态特性。 该项目包括三个主要方面：1）完成离子对激发态下导致发光上转换和光子雪崩的合作过程的研究; 2）研究激活中心高激发态的光学和输运性质及其与主体导带的相互作用;以及3）寻找存在于材料的高激发态中的激发的定域/离域（安德森）跃迁。 学生将参加这个项目，并将在发光二极管实验研究的各个方面接受培训，从而为进入科学/技术劳动力市场做好准备。%本计画研究发光材料的光学性质。 这种类型的物质对于从固态激光器到光学显示器的各种技术都很重要。 这些调查的目的是为了获得更好的和更基本的物理过程，决定这些材料的性能特点和效率的理解。 这种知识是设计和剪裁材料以适应具体技术和物质需要和要求的基础。这些调查将在研究生和本科生的协助下进行。 学生将在前沿实验和理论材料科学的重要领域获得经验。这将使他们成为科学/技术劳动力中的生产成员。

In this project the static and dynamic properties of the optically excited states of activated luminescent crystalline materials will be investigated. The project encompasses three main aspects: 1) completion of studies of cooperative processes in the excited state of ion pairs which lead to luminescence upconversion and photon avalanching; 2) investigation of the optical and transport properties of the high lying energy states of activator centers and their interactions with the conduction band of the host; and 3) a search for a localization/delocalization (Anderson) transition of the excitations residing in the high lying states of the materials. Students will participate in this project and will be trained in all aspects of experimental research on light emitting diodes and thus be prepared to enter the scientific/technical workforce.%%%This project deals with investigations of the optical properties of materials that luminesce, or emit light. Substances of this type are important to variety of technologies ranging from solid state lasers to optical displays. The aim of these investigations is to obtain a better and more fundamental understanding of the physical processes which determine the performance characteristics and efficiencies of these materials. Such knowledge is the basis for the design and tailoring of materials to suit specific technical and physical needs and requirements. These investigations will be carried out with the assistance of graduate and undergraduate students. The students will gain experience in an important area of forefront experimental and theoretical materials science. This will enable them to be productive members of the scientific/technical workforce.