SBIR Phase I: Quantum Confined Atom Based Nanophosphors for Future Efficient Lighting

这个小企业创新研究（SBIR）第一阶段项目涉及纳米晶体量子点中激活离子的限制，以提高led白灯的亮度和效率。这些量子约束原子(QCA)-纳米荧光粉涉及一个单一的激活离子，限制在半导体和绝缘体的2- 7nm纳米晶体宿主（量子点）内。该项目的目标包括纳米荧光粉的制造及其光学和热性能的表征。该项目将证明荧光粉增强的发光和热性能可应用于高亮度白光led和传统照明产品。根据具体的灯，灯效率的提高应该在15- 50%的范围内。该项目还将研究光产生对温度的依赖性。这不仅对led和弧光灯的高通量和高温工作很重要，而且有助于对纳米荧光粉的热特性有基本的了解。该技术的商业应用是用固态led代替白炽灯照明。在美国，每年的发电成本为600亿美元，而照明占总消耗的20%。用高效的固态LED灯取代白炽灯可以节省大量的费用，并显著减少电力消耗。

This Small Business Innovation Research (SBIR) Phase I project involves the confinement of activator ions in nanocrystalline quantum dots to enhance the brightness and efficiency of LED-white lamps. These quantum confined atom (QCA)-nanophosphors involve a single activator ion confined within a 2-7 nm nanocrystal host (quantum dot) of semiconductor and insulator. The project objective involves the fabrication of the nanophosphors and characterization of their optical and thermal properties. The project will demonstrate that the enhanced luminescent and thermal properties of the phosphors can be applied to high brightness white LEDs and conventional lighting products. The improvements in lamp efficiency should be in the 15-50 percent range depending on the specific lamp. The project will also study the dependency of light generation on temperature. This would be of importance not only for the high-flux and high temperature operation of LEDs and arc lamps but would help in a basic understanding of the thermal properties of nanophosphors.The commercial application of this technology is in the replacement of incandescent lamp lighting with solid state LEDs. The cost of producing electricity is $60 billion annually in the US and lighting accounts for 20 percent of the consumption. Replacing incandescent lamps with efficient solid state LED lamps could result in huge savings and a significant reduction in electric consumption.