CAREER: Development and Characterization of New High Thermal Conductivity Materials for Energy-Efficient Electronics and Photonics

职业：用于节能电子和光子学的新型高导热材料的开发和表征

• 批准号: 1753393
• 负责人: Yongjie Hu
• 金额: $ 49.61万
• 依托单位: University of California-Los Angeles
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-06-01 至 2024-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1753393&HistoricalAwards=false
• 关键词: CAREER; Development; Characterization; New; Thermal

Non-technical Description: With the ever-shrinking dimensions of electronic and photonic devices to the nanoscale, heat dissipation is an increasingly critical technological challenge. To address this challenge, discovering and understanding the properties of high thermal conductivity materials that can efficiently dissipate heat from hot spots and improve the performance of devices constitute an urgent need. This CAREER project aims to investigate new high thermal conductivity materials and understand the fundamental transport phenomena and mechanisms associated with the chemistry and structures of such materials. The PI is using complementary approaches, including multiscale modeling, advanced synthesis and characterization methods. These less explored materials are theoretically predicted to offer new paradigms to enable advanced electronics, optoelectronics, thermal energy conversion and management. The research components of this project are closely integrated with various education and outreach activities, offering cross-disciplinary training beyond traditional educational boundaries, and involving the participation of underrepresented and diversity groups. This is accomplished through industry-academia collaborations, development of a new interdisciplinary course curriculum, and establishment of a Nano-Energy outreach program.Technical Description: The principal investigator and his research team are investigating a new class of high thermal conductivity materials (such as BAs, BP, GeC) to address the critical challenge of heat dissipation in modern electronics and photonics. Some of these unique materials have been predicted recently by ab initio theory to have ultrahigh thermal conductivity, over 1000 W/mK, enabled by multiple factors, including a large mass ratio of the constitutive atoms, acoustic bunching, and isotopic purity. This CAREER project aims to experimentally realize these high thermal conductivity materials through a synergistic growth-measurement-model approach to investigate the optimum growth conditions, structural and thermal properties, and phonon transport mechanisms. The team develops new characterization tools, including advanced phonon spectral mapping spectroscopy based on the time-domain thermoreflectance technique, and advanced atomic-level material structural control methods, to establish detailed structure-property relationships with microscale quantification. Experimental measurement results including phonon mean free path spectra are analyzed using atomistic density functional theory and multiscale Boltzmann transport equations solved by Monte Carlo simulations. Completion of this project may lead to transformative technological innovations for advancing the performance and energy-efficiency of future electronics and photonics. In addition, the multidisciplinary research components are closely integrated with various education and outreach activities with graduate, undergraduate, and high school students, involving students from underrepresented minority groups.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.

非技术描述：随着电子和光子器件的尺寸不断缩小到纳米级，散热是一个越来越关键的技术挑战。为了应对这一挑战，发现和了解高导热材料的性能，可以有效地从热点散热，提高器件的性能构成了迫切的需求。这个CAREER项目旨在研究新的高导热材料，并了解与此类材料的化学和结构相关的基本传输现象和机制。PI正在使用互补的方法，包括多尺度建模，先进的合成和表征方法。理论上，这些探索较少的材料预计将提供新的范例，以实现先进的电子学，光电子学，热能转换和管理。该项目的研究部分与各种教育和外联活动密切结合，提供超越传统教育界限的跨学科培训，并让代表性不足和多样性群体参与。这是通过产学合作，开发新的跨学科课程，并建立一个纳米能源推广计划。技术描述：首席研究员和他的研究团队正在研究一类新的高导热材料（如BA，BP，GeC），以解决现代电子和光子学中散热的关键挑战。这些独特的材料中的一些最近已经通过从头算理论预测具有超过1000 W/mK的热导率，这是由多种因素实现的，包括组成原子的大质量比，声学聚束和同位素纯度。该CAREER项目旨在通过协同生长测量模型方法实验实现这些高热导率材料，以研究最佳生长条件，结构和热性能以及声子传输机制。该团队开发了新的表征工具，包括基于时域热反射技术的先进声子光谱映射光谱，以及先进的原子级材料结构控制方法，以建立详细的结构-性能关系和微尺度量化。实验测量结果，包括声子平均自由程谱进行了分析，使用原子密度泛函理论和多尺度玻尔兹曼输运方程求解Monte Carlo模拟。该项目的完成可能会带来变革性的技术创新，以提高未来电子和光子学的性能和能效。此外，多学科研究部分与研究生、本科生和高中生的各种教育和外展活动紧密结合，涉及代表性不足的少数群体的学生。该奖项反映了NSF的法定使命，并通过使用基金会的智力价值和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

Complementary doping of van der Waals materials through controlled intercalation for monolithically integrated electronics

• DOI: 10.1007/s12274-020-2634-y
• 发表时间: 2020-03
• 期刊: Nano Research
• 影响因子: 9.9
• 作者: M. Ke;Huuduy Nguyen;H. Fan;Man Li;Huan Wu;Yongjie Hu

Anomalous thermal transport under high pressure in boron arsenide

• DOI: 10.1038/s41586-022-05381-x
• 发表时间: 2022-11-23
• 期刊: NATURE
• 影响因子: 64.8
• 作者: Li, Suixuan;Qin, Zihao;Hu, Yongjie
• 通讯作者: Hu, Yongjie

Integration of boron arsenide cooling substrates into gallium nitride devices

• DOI: 10.1038/s41928-021-00595-9
• 发表时间: 2021-06-17
• 期刊: NATURE ELECTRONICS
• 影响因子: 34.3
• 作者: Kang, Joon Sang;Li, Man;Hu, Yongjie
• 通讯作者: Hu, Yongjie

Ab initio investigations on hydrodynamic phonon transport: From diffusion to convection

• DOI: 10.1016/j.ijheatmasstransfer.2023.124988
• 发表时间: 2024-03
• 期刊: International Journal of Heat and Mass Transfer
• 影响因子: 5.2
• 作者: Huann-Der Wu;Yongjie Hu

Nonperturbative determination of isotope-induced anomalous vibrational physics

同位素引起的异常振动物理的非微扰测定

• DOI: 10.1103/physrevb.108.l140302
• 发表时间: 2023
• 期刊: Physical Review B
• 影响因子: 3.7
• 作者: Wu, Huan;Qin, Zihao;Li, Suixuan;Lindsay, Lucas;Hu, Yongjie
• 通讯作者: Hu, Yongjie