Synthesis and Spectroscopy of Ordered Material

在本项目中，我们将研究激活发光晶体材料的光激发态的静态和动态性质。该项目包括三个主要方面：1)完成对离子对激发态中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以及它们与主体导带的相互作用；3)寻找驻留在材料高激发态的局域/离域(Anderson)转变。学生将参与这个项目，并将接受发光二极管实验研究的所有方面的培训，从而为进入科学/技术大军做好准备。%这个项目研究发光或发光的材料的光学性质。这类物质对从固态激光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更好和更基本地了解决定这些材料的性能特征和效率的物理过程。这些知识是设计和定制材料以适应特定的技术和物理需求和要求的基础。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/技术劳动力中富有成效的成员。

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.