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.

高温溶液的晶体生长用于创建具有复杂结构和理想发光特性的新氧化物材料。 正在追求从高温溶液中晶体生长的几种方法，以创建用于固态照明应用的不同类别的发光材料，包括使用高温溶液来生长新的复杂稀土含量，其中含有固态照明和上转换应用；在高度还原条件下使用稳定的通量，以用于含有磷的复合物EU2+的晶体生长。此外，这项研究还研究了英国钻石束系的原位通量中通量中的晶体生长过程，旨在揭示通常既不观察到也不孤立的中间体的物质化以及最终产物的形成。在短期内，从原位工作中获得的信息用于优化晶体生长实验，而从长远来看，这种理解将通量晶体的生长从经验方法转变为更刻意的过程。固态照明材料的领域集中在能量更大的能量上更加有效的发热性和更令人愉悦的光线发射磷光体上。 为了完成这些任务，正在对本科生，研究生和博士后研究人员进行培训，以使用最先进的技术来合成和表征这些材料，以使用最先进的仪器来综合和表征这些材料。 该项目为学生（包括妇女和代表性不足的少数民族）提供教育和研究培训，并有助于为学术界和行业准备熟练的劳动力。

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