RUI: Nanoscale 3-D Thermal Profiling Inside Optoelectronic Devices

RUI：光电器件内部纳米级 3D 热分析

• 批准号: 0621735
• 负责人: Janice Hudgings
• 金额: $ 27万
• 依托单位: Mount Holyoke College
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-09-01 至 2010-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0621735&HistoricalAwards=false
• 关键词: RUI; Nanoscale; Thermal; Profiling; Inside

Nanoscale 3D thermal profiling inside optoelectronic devices0621735Janice Hudgings, Mount Holyoke CollegeIntellectual Merit. Improved thermal engineering is critical to improving the operating characteristics and lifetimes of optoelectronic devices that are central to photonics applications such as wavelength division multiplexed and high-speed communications networks. However, conventional macroscopic theory often cannot accurately predict thermal behavior in devices engineered on the micro- or nano-scale. Likewise, experimental exploration of the remarkably complex heat generation and transport processes in nano-structured optoelectronic devices is also challenging, in large part because the primary heat sources are often buried deep within these devices. The work proposed here will provide a dramatic contribution to thermal engineering of optoelectronic devices by enabling for the first time high-resolution experimental measurements of temperatures deep within an operating device. We will develop a confocal thermoreflectance technique to measure 3-D temperature profiles with spatial resolutions on the order of 150nm (lateral) and 550nm (vertical), along with 10-25mK thermal resolution. This is an order of magnitude better spatial resolution and a two order of magnitude improvement in thermal resolution relative to commercial IR microscopes. High resolution experimental measurements of the thermal distribution both within operating devices and also at the boundaries will be combined with detailed theoretical modeling of heat generation and transport within complex heterostructured devices. The proposed state of the art, confocal thermoreflectance technique will enable us to achieve the following three technological advances: a) non-invasive, 3-D thermal profiling inside operating optoelectronic devices; b) analyze heat transport in complex optoelectronic devices; and c) determine mechanisms for internal heat generation in homojunctions and heterostructured devices.Broader impact: This proposal will significantly enhance the infrastructure for research and education at Mt Holyoke College, by creating a novel facility for high-resolution, nanoscale thermal imaging. This facility will lead to new partnerships with both international and industrial collaborations, as well as strengthening our participation in the existing local 5-College network with the University of Massachusetts at Amherst. Furthermore, the proposal integrates research with education: 6-8 undergraduate women will work on this project, in collaboration with the PI and a 5-College postdoctoral researcher. Mt. Holyoke places a particular premium on the integration of cutting-edge research into the education of the next generation of women scientists and engineers, so undergraduates will be heavily involved in all aspects of the proposed research. Finally, because Mt Holyoke is a women's college with an unusually diverse student body and the PI is heavily involved in a number of activities to diversify access to the sciences, the proposed research comprises a remarkable opportunity to broaden the participation of underrepresented students in science.

光电器件内部的纳米级3D热分析，0621735 janice Hudgings, Mount Holyoke college, intellectual Merit。改进的热工程对于改善光电子器件的工作特性和寿命至关重要，而光电子器件是光子学应用（如波分复用和高速通信网络）的核心。然而，传统的宏观理论往往不能准确地预测在微或纳米尺度上设计的器件的热行为。同样，对纳米结构光电器件中非常复杂的热产生和传输过程的实验探索也具有挑战性，这在很大程度上是因为主要热源通常深埋在这些器件中。本文提出的工作将为光电器件的热工程提供巨大的贡献，因为它首次实现了对操作器件内部深处温度的高分辨率实验测量。我们将开发一种共聚焦热反射技术，以测量空间分辨率为150nm（横向）和550nm（垂直）的三维温度分布，以及10-25mK的热分辨率。这是一个数量级更好的空间分辨率和两个数量级的改进，在热分辨率相对于商用红外显微镜。高分辨率实验测量的热分布，既在操作装置内，也在边界将与复杂异质结构装置内的热量产生和传输的详细理论建模相结合。提出的最先进的共聚焦热反射技术将使我们能够实现以下三个技术进步：a)操作光电子器件内部的非侵入性3d热分析；B)分析复杂光电器件中的热传递；c)确定同质结和异质结构器件内部热产生的机制。更广泛的影响：该提案将通过创建高分辨率纳米级热成像的新设备，显著增强Mt Holyoke学院的研究和教育基础设施。该设施将与国际和行业合作建立新的伙伴关系，并加强我们与马萨诸塞大学阿默斯特分校现有的当地5所学院网络的参与。此外，该提案将研究与教育相结合：6-8名本科女性将与PI和5个学院的博士后研究员合作参与该项目。霍利奥克大学特别重视将前沿研究与下一代女科学家和工程师的教育相结合，因此本科生将大量参与拟议研究的各个方面。最后，因为Mt Holyoke是一所女子学院，拥有不同寻常的多元化学生群体，而且PI积极参与了许多活动，以多样化获得科学的途径，拟议的研究包括一个难得的机会，以扩大代表性不足的学生参与科学。