Hybrid Organic-Inorganic Infrared Light-Emitting Devices using Group IV Semiconductor Nanoparticles

该奖项是根据2009年美国复苏和再投资法案资助的（公法111-5）本研究的目的是使用基于包括Si、Ge和Si 1-xGex的发射性IV族半导体纳米颗粒的混合有机-无机发光器件来实现高效的红外电致发光。第IV族半导体纳米粒子具有成为红外线中的高效且可调谐的光子源的潜力。迄今为止，这些系统尚未在发光器件中被广泛研究。在这项工作中，性能将最大限度地提高工程的设备架构，加工条件和纳米粒子钝化长度。使用各种显微镜将装置性能与纳米颗粒膜形态相关联。随着对硅基发光器件的结构和膜形态的更好理解，将研究其他新颖的IV族系统，以提供多个红外光发射器。 第四组系统的重点将扩大纳米粒子的光子器件应用的研究，也将有助于在这些材料的辐射和非辐射过程的基本理解。更广泛的影响：PI已确定作为一个优先事项的教育高中，本科生和研究生有关的纳米系统的合成及其光电性能的问题。计划提出包括高中学生和教师的暑期研究经验，通过明尼苏达大学的课程为本科生提供研究机会，以及将研究成果整合到化学工程，材料科学和机械工程的本科和研究生课程中。结果将通过界面和材料工程研究工业伙伴关系传播给工业伙伴，两个PI都是积极参与者。

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5)The objective of this research is to realize efficient infrared electroluminescence using a hybrid organic-inorganic light-emitting device based on emissive group IV semiconductor nanoparticles including Si, Ge and Si1-xGex.Intellectual Merit: Group IV semiconductor nanoparticles have the potential to be efficient and tunable photon sources in the infrared. To date, these systems have not been extensively studied in light-emitting devices. In this work, performance will be maximized by engineering the device architecture, processing conditions, and nanoparticle passivation length. Device performance will be correlated to nanoparticle film morphology using various microscopies. With an improved understanding of architecture and film morphology for Si-based light-emitting devices, other novel group IV systems will be investigated in order to provide multiple infrared light-emitters. The focus on group IV systems will broaden the study of nanoparticles for photonic device applications, and will also contribute to the basic understanding of radiative and non-radiative processes in these materials.Broader Impact: The PIs have identified as a priority the education of high school, undergraduate and graduate students on issues relating to the synthesis of nanoscale systems and their optoelectronic properties. Programs are proposed including summer research experience for high school students and teachers, research opportunities for undergraduate students through programs at the University of Minnesota, and the integration of research results into undergraduate and graduate classes in Chemical Engineering and Materials Science and Mechanical Engineering. Results will be disseminated to industrial partners through the Industrial Partnership for Research in Interfacial and Materials Engineering, where both PIs are active participants.