Crystal Growth of Complex Luminescent Oxides

复杂发光氧化物的晶体生长

• 批准号: 1301757
• 负责人: Hans-Conrad zur Loye
• 金额: $ 46万
• 依托单位: University of South Carolina at Columbia
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-08-01 至 2017-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1301757&HistoricalAwards=false
• 关键词: Crystal; Growth; Complex; Luminescent; Oxides

Crystal growth from high temperature solutions is used to create new oxide materials with complex structures and desirable luminescent properties. Several approaches to the crystal growth from high temperature solutions are being pursued to create different classes of luminescent materials for solid-state lighting applications, including the use of high temperature solutions to grow new complex rare earth containing oxides for solid state lighting and upconversion applications; and the use of fluxes stable under highly reducing conditions for the crystal growth of complex Eu2+ containing phosphors. In addition, this research investigates the process of crystal growth in fluxes using in-situ at the Diamond beam line in the UK, aiming to reveal the materialization of intermediates that are typically neither observed nor isolated, and the formation of the final product. In the short term, the information gained from the in-situ work is used to optimize the crystal growth experiments, while in the long run this understanding transforms flux crystal growth from an empirical method to a more deliberate process.The area of solid state lighting materials is focused on the development of energetically more efficient and visually more pleasing light emitting phosphors. To accomplish these tasks, undergraduates, graduate students and postdoctoral researchers are being trained in cutting-edge techniques for synthesizing and characterizing these materials using state of the art instrumentation. This project provides education and research training to students (including women and underrepresented minorities) and helps to prepare a skilled workforce for academia and industry.

从高温溶液中生长晶体被用来创造具有复杂结构和理想发光性能的新型氧化物材料。目前正在探索几种从高温溶液中生长晶体的方法，以创造用于固态照明应用的不同类别的发光材料，包括使用高温溶液生长用于固态照明和上转换应用的新的含稀土氧化物的复杂氧化物；以及使用在高度还原条件下稳定的助熔剂生长含Eu2+的复杂荧光粉的晶体。此外，本研究还研究了在英国钻石束线上使用原位熔剂生长晶体的过程，旨在揭示通常既不被观察到也不被隔离的中间产物的物化过程，以及最终产品的形成。在短期内，从现场工作中获得的信息被用于优化晶体生长实验，而从长期来看，这种理解将熔剂晶体生长从经验方法转变为更谨慎的过程。固态照明材料领域的重点是开发能量更高效、视觉更舒适的发光材料。为了完成这些任务，本科生、研究生和博士后研究人员正在接受使用最先进的仪器合成和表征这些材料的尖端技术方面的培训。该项目向学生(包括妇女和代表不足的少数群体)提供教育和研究培训，并帮助为学术界和工业界培养一支熟练的劳动力队伍。

项目成果

Relationship between A-site cation and magnetic structure in 3d−5d−4f double perovskite iridates Ln2NiIrO6 ( Ln=La , Pr, Nd)

3d～5d～4f双钙钛矿铱酸盐Ln2NiIrO6（Ln=La、Pr、Nd）A位阳离子与磁性结构的关系

• DOI: 10.1103/physrevmaterials.5.064408
• 发表时间: 2021
• 期刊: Physical Review Materials
• 影响因子: 3.4
• 作者: Ferreira, T.;Calder, S.;Parker, D. S.;Upton, M. H.;Sefat, A. S.;Loye, H.-C. zur
• 通讯作者: Loye, H.-C. zur