EAGER: Nanomodular Systems for Efficient Light Emission from a Heterogeneous Integration of Polymers, Two-Dimensional Semiconductors and Insulators

EAGER：通过聚合物、二维半导体和绝缘体的异质集成实现高效发光的纳米模块化系统

• 批准号: 1938179
• 负责人: Ananth Dodabalapur
• 金额: $ 29万
• 依托单位: University of Texas at Austin
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-09-01 至 2022-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1938179&HistoricalAwards=false
• 关键词: EAGER; Nanomodular; Systems; Efficient; Light

Light emission is an important part of modern technological age. Every major advance in the generation of light from engineered structures has had a huge impact on society and the nation's security. Such previous advances include the semiconductor laser, the light emitting diode, and solid-state lighting. They have revolutionized almost every aspect of life by impacting lighting, communication, information storage, entertainment, and others. It is essential that innovation in this area continues to take place and new types and architectures of light emitting systems be realized that exceed the capabilities of previous technologies. This EArly-concept Grant for Exploratory Research (EAGER) award supports research that allows new types of light emitting structures to be created that combine dissimilar materials in architectures that hold promise for improved functionality. In this research, light emitting polymers are combined with atomically thin semiconductors and quantum dots using a manufacturing approach that integrates multiple materials. This research advances the science and technology of manufacturing to create processes that facilitate such a heterogeneous integration. The availability of nanomodular systems positively impacts U.S. electronics and optoelectronics industries, thus boosting the nation's economy and prosperity. The project involves women and under-represented groups in research and trains engineering students in advanced technologies that are important in next generation manufacturing. The project also exposes students at all levels to cutting-edge research, thus motivating them to pursue careers in science and engineering.The project combines bottom-up (self-assembly) and top-down (lithography) nanomanufacturing approaches to create nanomodular systems for vastly improved functionality of light-emitting structures. The structures are based on combinations of 2D semiconductors, semiconducting polymers, quantum dot nanocrystals, and insulators. Ambipolar injection of electrons and holes by the 2D semiconductor is a crucial component of the research which leads to light emission from either the polymer or the quantum dot via combinations of charge and energy transfer. In such hybrid combinations of materials, the advantageous properties of different materials are combined. For example, 2D semiconductors have good charge injection and transport properties but poor light emission properties. Semiconducting polymers and quantum dots can possess very high light emission efficiencies but have generally poor charge transport properties. In a successful heterogeneous integration, the favorable properties are combined to create a level of performance that is very difficult to attain with the individual materials. The project directly addresses the manufacturing and design challenges that result in a successful functional integration. The design of nanomodular systems is guided by charge transport theory and numerical simulations.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.

光发射是现代科技时代的重要组成部分。从工程结构中产生光的每一个重大进步都对社会和国家安全产生了巨大的影响。这些先前的进步包括半导体激光器、发光二极管和固态照明。它们通过影响照明、通信、信息存储、娱乐等，几乎彻底改变了生活的方方面面。至关重要的是，在这一领域继续进行创新，实现超越以前技术能力的新型和新型发光系统架构。这项早期概念探索性研究（EAGER）奖支持的研究是，将不同的材料结合在建筑中，创造出新型的发光结构，从而有望提高功能。在这项研究中，发光聚合物与原子薄半导体和量子点结合使用了一种集成多种材料的制造方法。这项研究推进了制造业的科学和技术，创造了促进这种异构集成的过程。纳米模块化系统的可用性对美国电子和光电子产业产生了积极的影响，从而促进了国家的经济和繁荣。该项目让妇女和代表性不足的群体参与研究，并培训工程专业学生掌握对下一代制造业至关重要的先进技术。该项目还让各级学生接触到前沿研究，从而激励他们从事科学和工程方面的职业。该项目结合了自底向上（自组装）和自顶向下（光刻）纳米制造方法，以创建纳米模块化系统，大大提高了发光结构的功能。这种结构是基于二维半导体、半导体聚合物、量子点纳米晶体和绝缘体的组合。二维半导体的双极性电子和空穴注入是研究的一个重要组成部分，它通过电荷和能量转移的组合从聚合物或量子点发光。在这种材料的混合组合中，不同材料的优点被结合在一起。例如，二维半导体具有良好的电荷注入和输运特性，但光发射特性较差。半导体聚合物和量子点可以具有非常高的光发射效率，但通常具有较差的电荷传输特性。在一个成功的异质集成中，有利的特性结合在一起，创造了单个材料很难达到的性能水平。该项目直接解决了制造和设计方面的挑战，从而实现了成功的功能集成。纳米模块系统的设计以电荷输运理论和数值模拟为指导。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。