PFI-TT: Pushing the limits of color quality and efficiency in solid state lighting with colloidal quantum dots.

PFI-TT：利用胶体量子点突破固态照明色彩质量和效率的极限。

• 批准号: 1827726
• 负责人: Jonathan Owen
• 金额: $ 20万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-08-15 至 2020-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1827726&HistoricalAwards=false
• 关键词: PFI; TT; Pushing; limits; color

The broader impact/commercial potential of this proposal rests in improved luminescent materials that can increase the efficiency and the color quality of light emitting diodes (LEDs) and luminescent displays. The conversion of electricity to warm natural light in a lighting application depends heavily on the performance of red emitting materials, while the performance of cutting edge luminescent displays, including microdisplays and televisions, can be improved by narrow band red and green emitters. So called "quantum dots" can be optimized to produce a desired luminescence wavelength and the stable, bright luminescence required by these applications. If quantum dots can be manufactured in a cost effective manner and withstand the harsh conditions found on LED chips, they would simultaneously improve the color, efficiency, and cost of lighting and displays. This would lead to more rapid penetration of these technologies and save up to 1% of global energy or more. The successful implementation of quantum dots in lighting and emissive displays will therefore increase the economic competitiveness of the United States, while enhancing the health and welfare of the American public.The proposed project uses novel and highly tunable synthesis reagents to optimize high performance quantum dot architectures. The method utilizes a patented "one pot" synthetic strategy and patented synthesis reagents that are inexpensive, air stable, and nontoxic and have tunable conversion kinetics. The approach controls quantum dot structure with levels of precision not possible previously, an important advance from traditional quantum dot synthesis; a notoriously Edissonian process of trial and error. The novel reagents and the "one pot" synthesis produce quantitative reaction yields, facilitating a highly scalable method that reduces the challenge of quantum dot manufacturing on scales required for broad adoption in solid state lighting and emissive display markets. These quantum dots will be encapsulated and tested on LED chips to determine their long term stability. Outer layers of the quantum dots will be optimized to improve this long term stability and to enhance their performance on LED chips used in display and down lighting applications.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该提案的更广泛的影响/商业潜力在于改进发光材料，可以提高发光二极管（led）和发光显示器的效率和颜色质量。在照明应用中，电能转换为温暖的自然光在很大程度上取决于红色发射材料的性能，而包括微型显示器和电视在内的尖端发光显示器的性能可以通过窄带红色和绿色发射器得到改善。所谓的“量子点”可以被优化，以产生所需的发光波长和这些应用所需的稳定、明亮的发光。如果量子点能够以具有成本效益的方式制造，并能承受LED芯片上的恶劣条件，它们将同时改善照明和显示器的颜色、效率和成本。这将导致这些技术更快地渗透，并节省全球能源的1%或更多。因此，量子点在照明和发光显示器中的成功实施将提高美国的经济竞争力，同时增强美国公众的健康和福利。提出的项目使用新颖和高度可调的合成试剂来优化高性能量子点架构。该方法采用专利的“一锅”合成策略和专利合成试剂，这些合成试剂价格低廉，空气稳定，无毒，并且具有可调节的转化动力学。该方法以以前不可能的精度控制量子点结构，这是传统量子点合成的重要进步；这是一个臭名昭著的爱迪生式的试错过程。新型试剂和“一锅”合成产生定量反应产率，促进了一种高度可扩展的方法，减少了在固态照明和发光显示器市场广泛采用所需的规模上制造量子点的挑战。这些量子点将被封装并在LED芯片上进行测试，以确定它们的长期稳定性。量子点的外层将进行优化，以提高这种长期稳定性，并提高其在显示器和筒灯应用中使用的LED芯片上的性能。该奖项反映了美国国家科学基金会的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。