Red-Green-Blue Colloidal Quantum Dots for Full Spectrum Microlasers

用于全光谱微型激光器的红-绿-蓝胶体量子点

• 批准号: 1128331
• 负责人: Arto Nurmikko
• 金额: $ 30.91万
• 依托单位: Brown University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-09-01 至 2014-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1128331&HistoricalAwards=false
• 关键词: Red; Green; Blue; Colloidal; Quantum

Objective: To penetrate the full visible spectrum using a single nanocrystalline material system, based on colloidal semiconductor quantum dots, to develop coherent microemitters and their arrays. The proposed approach is guided by two key research objectives: (a) methods to create ultrahigh density closely-packed quantum dot thin film red- green-blue optical gain media which can be tightly adhered on selected substrates and microscale patterned surfaces, and (b) integration of optical microresonators with the quantum dot media which incorporate the high gain medium to enable operation for a color-tunable microlaser at room temperature under practical and realistic excitation conditions. Intellectual merit: At the basic level, research aims to maximize the optical gain in densely packed colloidal quantum dot-based microresonators by investigating fundamental competition and interaction within interacting quantum dot excitonic states between radiative (stimulated emission) and nonradiative processes. At the applied level, this knowledge is employed to design low-cost thin film gain media which can be patterned and/or conformally deposited and integrated within optical microcavities for microscale lasers. Broader impacts: The single material based full spectrum coherent microemitters may offer a transformative means to develop new types pixelated laser projection devices, a technologically important outcome for portable displays. The PI aims to recruit women and other minority students under the REU program and will participate in outreach events with students and teachers through the already established program at Brown with Providence Public Schools system. Graduate students will have opportunity to work with a start-up company to gain experience transitioning research to technologies.

目标：使用基于胶体半导体量子点的单一纳米晶体材料系统穿透整个可见光谱，开发相干微发射器及其阵列。所提出的方法以两个关键研究目标为指导：（a）创建超高密度紧密堆积量子点薄膜红绿蓝光学增益介质的方法，该介质可以紧密粘附在选定的基板和微米级图案表面上，以及（b） ）光学微谐振器与量子点介质的集成，其中包含高增益介质，使颜色可调微激光器在室温下在实际和现实的激发条件下运行。智力价值：在基础层面上，研究旨在通过研究辐射（受激发射）和非辐射过程之间相互作用的量子点激子态内的基本竞争和相互作用，最大化基于密集胶体量子点的微谐振器的光学增益。在应用层面，这些知识被用来设计低成本薄膜增益介质，该介质可以被图案化和/或保形沉积并集成在微型激光器的光学微腔内。 更广泛的影响：基于单一材料的全光谱相干微发射器可能为开发新型像素化激光投影设备提供变革性手段，这是便携式显示器的重要技术成果。 PI 旨在根据 REU 计划招收女性和其他少数族裔学生，并将通过布朗大学普罗维登斯公立学校系统已经制定的计划与学生和教师一起参加外展活动。研究生将有机会与初创公司合作，获得将研究转化为技术的经验。