Developing Highly Luminescent Materials for Low-Cost and Energy-Efficient Lighting Applications

非技术摘要在材料研究部的固态和材料化学项目的支持下，该项目旨在通过开发替代的高发光材料来解决目前用于固态照明技术的稀土元素（REE）基磷光体的成本和供应问题。这些无机-有机杂化材料具有成本效益，可溶液加工，并且100%不含稀土元素。它们在一般照明和照明应用中显示出强大的前景。最终目标是实现与照明市场上的商业产品相当的高发光效率和颜色质量。成功地实施这一项目可大大有助于减少对可再生能源的依赖。该项目也为研究生、本科生和高中生的研究和培训提供了一个很好的平台，同时也为罗格斯大学内外的其他教育和推广活动提供了一个机会。技术摘要两种不含稀土元素的混合磷光体材料将是本研究的重点：MX（L）系列（M = Cu，Ag; X = Cl，Br，I; L = N-配体）建立在强发光MX簇模块上，重点是碘化亚铜混合结构;以及Zn（FP）家族由高发射分子荧光团（FP）构建。该研究小组旨在更好地了解两种混合材料家族的光学行为，特别是光致发光的起源，无机-有机界面处原子和/或分子相互作用的性质，以及这种相互作用对这些材料的吸收和发射效率，颜色质量，结构完整性以及水分和热稳定性的影响。这是通过一个真正的综合和协同的方法，结合了最先进的理论方法和实验光谱技术，以指导设计，合成和结构修饰，并评估和理解的物理性质。这种方法允许PI以系统的方式优化和增强目标功能，并进行深入研究，以将观察到的光学特性与混合系统的结构、组成和化学键合之间的关系关联起来。

Non-Technical AbstractWith support from the Solid State and Materials Chemistry program in the Division of Materials Research, this project intends to address the cost and supply issues of rare-earth element (REE)-based phosphors currently used in solid state lighting technologies through the development of alternative highly luminescent materials. These inorganic-organic hybrid materials are cost-effective, solution-processable, and 100% free of REEs. They show strong promise for general lighting and illumination applications. The ultimate objective is to achieve high luminous efficacy and color quality comparable to commercial products in the lighting market. Successful implementation of this project can contribute significantly to reducing dependence on REEs. This project also serves as an excellent platform for the research and training of graduate, undergraduate, and high school students, as well as an opportunity to develop other educational and outreach activities within and beyond the Rutgers community.Technical AbstractTwo types of REE-free hybrid phosphor materials will be the focus of this study: the MX(L) family (M = Cu, Ag; X = Cl, Br, I; L = N-ligand) built on strongly-luminescent MX cluster modules, with an emphasis on cuprous iodide hybrid structures; and the Zn(FP) family constructed from highly-emissive molecular fluorophores (FPs). The research team aims to gain a better understanding of the optical behavior of the two hybrid material families and specifically of the origin of photoluminescence, the nature of atomic and/or molecular interactions at the inorganic-organic interface, and the effect of such interactions on the absorption and emission efficiency, color quality, structural integrity, and moisture and thermal stability of these materials. This is achieved through a truly integrated and synergistic approach that combines state-of-the-art theoretical methods and experimental spectroscopic techniques to guide design, synthesis, and structure modification, and to evaluate and understand the photophysical properties. This approach allows the PI to optimize and enhance the targeted functionality in a systematic manner and to conduct an in-depth study to correlate the relationship between observed optical properties and structure, composition, and chemical bonding of the hybrid systems.