RUI: Intercalation of Heavy Metal Iodides

这个跨学科项目旨在研究重金属碘化物中的插层，包括(1)新材料的合成和配方(2)研究这些材料中的键合机制以优化其性能，以及(3)未被充分代表的本科生参与研究项目。重点是研究这些宽禁带半导体的光敏性、光成像和成键机制。铅、镉和铋碘与小客体分子的插层反应将产生一类新的插层化合物，既不同于石墨体系，也不同于过渡金属二卤化物体系。确定控制键合的因素将为控制和优化这种新型材料独特的光学性能提供洞察力。%由于这些材料产生锐利的光学带边，可以优化包括可见光太阳能电池、高分辨率成像和高速光开关在内的应用，因此观察到带边以上的光吸收大幅增加，带边以下的吸收减少。这项多学科提案由多学科事务厅共同支持。

9901165ColemanThis interdisciplinary project aims to investigate intercalation in heavy metal iodides including (1) the synthesis and formulation of new materials (2) investigation of the bonding mechanisms in these materials to optimize their performance, and (3) involvement of under represented undergraduate students in research projects. The emphasis will be on studying the photosensitivity, photoimaging, and bonding mechanisms in these wide bandgap semiconductors. Intercalation of lead-, cadmium-, and bismuth-iodides with small guest molecules will generate a new class of intercalation compounds distinct from both the graphite and transition-metal-dichalcogenide systems. Determining the factors that control bonding will provide insights into controlling and optimizing the unique optical properties of this new class of materials.%%%A large increase in the optical absorption above the band-edge and a decrease in absorption below the band edge is observed for these materials produce sharp optical band edges that can be optimized for applications that include visible light solar cells, high resolution photoimaging, and high-speed optical switches. This multidisciplinary proposal is jointly supported by the Office of Multidisciplinary Affairs.