SBIR Phase I: Doped Quantum Dots for Solid State Lighting

SBIR 第一阶段：用于固态照明的掺杂量子点

• 批准号: 0740658
• 负责人: Hisham Menkara
• 金额: $ 10万
• 依托单位: PhosphorTech Corporation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-01-01 至 2008-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0740658&HistoricalAwards=false
• 关键词: SBIR; Phase; Doped; Quantum; Dots

This Phase I Small Business Innovation Research (SBIR) research project will develop novel high brightness solid-state Light Emitting Diodes (LED) using doped quantum dots. Solid state lighting is rapidly gaining momentum as a highly energy efficient replacement technology for incandescent and eventually fluorescent lighting. However, current high brightness solid state devices suffer from reduced luminous efficiencies due to scattering, re-absorption, and thermal quenching losses inherent in conventional phosphors and standard undoped quantum dots. The proposed doped quantum dots have broad and size-tunable absorption bands, size and impurity tuned emission bands, size-driven elimination of scattering effects, and a distinct separation between absorption and emission bands. In addition, they also display the ability to maintain efficient (even improved) emissions at high temperatures similar to those experienced in today's high brightness LEDs. These new lamps will improve lighting and provide US industry with competitive technologies that will significantly reduce global energy use and environmental pollution. This technology has applicability to all LED light sources where a fluorescent color conversion layer is used. Thus, any current application, such as lighting in portable electronics, automobiles, traffic signaling, will immediately benefit from increased efficiency. The increased efficiency and use of LEDs will lead to significantly reduced energy requirements, lower levels of pollution, reduced toxic waste (e.g., Hg from fluorescent lamps) and a reduced dependence on foreign oil suppliers.

该第一阶段小型企业创新研究 (SBIR) 研究项目将开发使用掺杂量子点的新型高亮度固态发光二极管 (LED)。固态照明作为白炽灯和最终荧光灯的高能效替代技术正在迅速发展。然而，由于传统磷光体和标准未掺杂量子点固有的散射、再吸收和热猝灭损失，当前的高亮度固态器件遭受发光效率降低的困扰。所提出的掺杂量子点具有宽且尺寸可调的吸收带、尺寸和杂质调整的发射带、尺寸驱动的散射效应消除以及吸收带和发射带之间的明显分离。此外，它们还表现出在高温下保持高效（甚至改进）发射的能力，类似于当今高亮度 LED 所经历的情况。这些新型灯具将改善照明并为美国工业提供有竞争力的技术，从而显着减少全球能源使用和环境污染。该技术适用于所有使用荧光颜色转换层的LED光源。因此，任何当前的应用，例如便携式电子设备、汽车、交通信号中的照明，都将立即受益于效率的提高。 LED 效率和使用的提高将显着降低能源需求、降低污染水平、减少有毒废物（例如荧光灯中的汞）并减少对外国石油供应商的依赖。