BRIGE: Novel Quantum Dot Inks For Printed Low Cost Inorganic-Organic Hybrid LEDs

PI: Amos， Delaina机构：路易斯维尔大学知识价值：人们认识到创新高效照明设备的必要性已经有一段时间了。固态照明设备的效率有可能比目前最好的传统照明技术提高两倍或更多。尽管基于单晶半导体的固态器件技术已经取得了重大进展，但仍然需要利用廉价的材料和工艺来开发这种技术。有机-无机复合照明技术在材料和工艺方面都提供了这样的可能性；然而，目前最先进的技术受到低效率的限制。该bridge奖旨在开发基于有机-无机复合材料的发光二极管（LED）器件转型进步所必需的新材料、工艺和基础知识。目标是开发用于混合有机-无机led的新型量子点（QDs）， QD/配体化学和导电聚合物（CP）。该项目的另一个目标是研究喷墨打印和其他可扩展技术在多层器件薄膜沉积中的应用。具体而言，该项目将重点关注以下四个方向：(1)利用地球丰度低毒性元素合成新型量子点；(2)量子点功能化和从器件性能角度研究量子点- cp接口；(3)采用喷墨沉积法在离散的红、绿、蓝切片上铺设量子点和聚合物层，产生白光；(4) LED器件的能量转换和光发射效率的制造和测试。更广泛的影响：拟议的扩大参与计划包括以下目标：(1)创建和传播照明展示的旅行历史，并附带针对区域K-12学生的视频；(2)创建为期半天的工程学院本科生和研究生研究研讨会；(3)为一门名为“量子点与照明”的新研究生课程制定课程。除了研究和课程整合成果外，PI计划将重点放在提高STEM领域中代表性不足的少数民族的毕业率和保留率的各种活动上。长期的社会影响将是在K-12、本科和研究生阶段提高对可再生能源挑战、目标和新兴照明技术的认识，并提高这一目标人群的毕业率和保留率。技术影响将包括新的可扩展处理技术，导致更低成本的LED照明，并显着改善环境影响和照明能源效率，相对于传统照明。

PI: Amos, Delaina Institution: University of LouisvilleIntellectual Merit: The need for innovation in high-efficiency lighting devices has been recognized for some time. Solid-state lighting devices have the potential to increase two- or more fold over the efficiencies of the best conventional lighting technologies available today. Even though there has been significant progress with solid-state device technology based on single crystal semiconductors, there is still a large need for developing such technologies utilizing inexpensive materials and processes. Organic-inorganic composite lighting technology offers such possibilities in terms of both materials and processes; however, the current state-of-the-art technology is limited by low efficiencies. This BRIGE award proposes to develop new materials, processes and fundamental understanding necessary for transformational advances with light emitting diode (LED) devices based on organic-inorganic composite materials. The objective is to develop novel quantum dots (QDs), QD/ligand chemistry and conductive polymers (CP) for use in hybrid organic-inorganic LEDs. Another objective of this project is to investigate the use of inkjet printing and other scalable techniques for the thin film deposition of the multi-layer device. Specifically, the project will focus on the following four directions: (1) synthesis of novel QDs made using earth abundant and less toxic elements; (2) functionalization of QDs and investigation of the QD-CP interface in terms of device performance; (3) use of inkjet deposition to lay down the QD and polymer layers in discrete red, green and blue sections to produce white light; and (4) fabrication and testing of LED devices in terms of energy conversion and light emission efficiency.Broader Impacts: The proposed broadening participation plan includes the following objectives (1) to create and disseminate a traveling history of lighting display with an accompanying video targeted at regional K-12 students; (2) to create a half-day Engineering school-wide undergraduate and graduate research symposium; and (3) to develop curriculum for a new graduate course entitled "Quantum Dots and Lighting." In addition to research and curricular integration outcomes, the PI plans to focus on various activities for increasing graduation and retention rates for underrepresented minorities in the STEM areas. Long-term societal impacts will be to elevate the awareness of renewable energy challenges, goals and emerging lighting technologies at the K-12, undergraduate and graduate levels as well as to increase graduation and retention rates for this target population. Technological impacts will include new scalable processing techniques leading to lower cost LED lighting and significantly improved environmental impact and lighting energy efficiencies relative to traditional lighting.