Integrated Hot-Phonon Harvesting Barriers in High-Power Circuit Devices

高功率电路器件中的集成热声子收集势垒

基本信息

项目摘要

CBET 1332807PI: Massoud Kaviany (U. Michigan)The proposed research aims to use (integrate) a novel hot phonon absorption barrier structure converting phonon energy to harvestable electric potential, in high-power electric circuits and devices. This electric potential barrier (barrier is formed by heterostructures, e.g., Al alloying, and its height matches optical phonon energy) allows only those electrons with high momentum/energy to pass through it, while the remaining electrons with lower energy will have a favorable phonon absorption condition. For the proposed example of GaN high electron mobility transistor, the expected reduction in the maximum operating temperature is as much as 40 degC at 5 W/mm Joule heating rate, and up to 20% of the phonons will be recycled corresponding to the same saving in power consumption (i.e., in-situ direct conversion of emitted phonons back to electric potential energy). The results are expected to also apply to light emitting diodes and other high-power electronics, and contribute to thermal management at atomic scale.The use of a heterobarrier, or abrupt change in material composition, in a circuit allows electricity-generated heat to boost electric potential instead of draining efficiency. Using this architecture in high-power circuits lowers the device temperature and improves the device efficiency. Electrons in a circuit gain energy by absorbing phonons, the interatomic vibrations associated with heat. In a circuit, a ?heterobarrier? may be inserted to take advantage of these excited electrons, boosting them up in electrical potential. The heterobarrier is engineered such that the increase in the band gap energy of the new material is equal to the energy given the electron by the phonons. Monte Carlo simulations based on interaction kinetics between electron and phonon show up to 19% of phonon energy converts to electric potential. This heterobarrier reverses the role of phonon from causing electric potential drop to causing potential gain.
masoud Kaviany(密歇根大学)提出的研究旨在使用(集成)一种新的热声子吸收势垒结构,将声子能量转换为可收集的电势,用于高功率电路和设备。这种势垒(势垒由异质结构形成,如铝合金,其高度与光学声子能量相匹配)只允许那些动量/能量高的电子通过,而剩余的能量较低的电子将具有良好的声子吸收条件。对于所提出的GaN高电子迁移率晶体管的示例,在5 W/mm焦耳加热速率下,最高工作温度的预期降低高达40℃,并且高达20%的声子将被回收,对应于相同的功耗节省(即发射声子的原位直接转换回电势能)。该研究结果也有望应用于发光二极管和其他高功率电子产品,并有助于原子尺度上的热管理。在电路中使用异位垒,或材料成分的突变,可以使电产生的热量提高电势,而不是降低效率。在大功率电路中使用这种架构可以降低器件温度,提高器件效率。电路中的电子通过吸收声子获得能量,声子是与热有关的原子间振动。在电路中,异质障?可以插入利用这些被激发的电子,提高它们的电势。异质势垒的设计使得新材料的带隙能量的增加等于声子给予电子的能量。基于电子和声子相互作用动力学的蒙特卡罗模拟表明,声子能量的19%转化为电势。这种异质势垒使声子的作用由引起电势下降转变为引起电势增益。

项目成果

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Massoud Kaviany其他文献

Analytic characterization and operational limits of a hybrid two-phase mechanically pumped fluid loop based on the capillary pumped loop
  • DOI:
    10.1016/j.ijheatmasstransfer.2021.122019
  • 发表时间:
    2022-02-01
  • 期刊:
  • 影响因子:
  • 作者:
    Julio Ferreira;Benjamin Furst;Takuro Daimaru;Eric Sunada;Massoud Kaviany
  • 通讯作者:
    Massoud Kaviany
Sensitivity and uncertainty analyses of ex-vessel molten core cooling in a flooded cavity during a severe accident
  • DOI:
    10.1016/j.nucengdes.2017.12.031
  • 发表时间:
    2018-03-01
  • 期刊:
  • 影响因子:
  • 作者:
    Byoungcheol Hwang;Kiyofumi Moriyama;Gisuk Hwang;Massoud Kaviany;Mooneon Lee;Eunho Kim;Hyun Sun Park
  • 通讯作者:
    Hyun Sun Park
FARO tests corium-melt cooling in water pool: Roles of melt superheat and sintering in sediment
  • DOI:
    10.1016/j.nucengdes.2016.05.039
  • 发表时间:
    2016-08-15
  • 期刊:
  • 影响因子:
  • 作者:
    Gisuk Hwang;Massoud Kaviany;Kiyofumi Moriyama;Hyun Sun Park;Byoungcheol Hwang;Mooneon Lee;Eunho Kim;Jin Ho Park;Yahya Nasersharifi
  • 通讯作者:
    Yahya Nasersharifi
UO<sub>2</sub> bicrystal phonon grain-boundary resistance by molecular dynamics and predictive models
  • DOI:
    10.1016/j.ijheatmasstransfer.2016.04.071
  • 发表时间:
    2016-09-01
  • 期刊:
  • 影响因子:
  • 作者:
    Woong Kee Kim;Ji Hoon Shim;Massoud Kaviany
  • 通讯作者:
    Massoud Kaviany
Role of quenching method on cooling rate and microstructure of steels: Variations in coolant and its flow arrangement
  • DOI:
    10.1016/j.ijheatmasstransfer.2022.122702
  • 发表时间:
    2022-06-15
  • 期刊:
  • 影响因子:
  • 作者:
    Sang Gun Lee;Massoud Kaviany;Jungho Lee
  • 通讯作者:
    Jungho Lee

Massoud Kaviany的其他文献

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{{ truncateString('Massoud Kaviany', 18)}}的其他基金

EAGER: In-situ spectral phonon recycling in LED for improved thermal, power and performance efficiency
EAGER:LED 中的原位光谱声子回收可提高热、功率和性能效率
  • 批准号:
    2407260
  • 财政年份:
    2024
  • 资助金额:
    $ 29.12万
  • 项目类别:
    Standard Grant
EAGER: Innovative 3-D, multiscale flow-boiling wick
EAGER:创新的 3-D、多尺度流动沸腾芯
  • 批准号:
    1623572
  • 财政年份:
    2016
  • 资助金额:
    $ 29.12万
  • 项目类别:
    Standard Grant
Phonon Recycling in Photonics
光子学中的声子回收
  • 批准号:
    0966229
  • 财政年份:
    2010
  • 资助金额:
    $ 29.12万
  • 项目类别:
    Standard Grant
Achieving Cryogenic Temperature in Laser Cooling Using Ion-Doped Nanopowders
使用离子掺杂纳米粉末实现激光冷却的低温
  • 批准号:
    0553651
  • 财政年份:
    2006
  • 资助金额:
    $ 29.12万
  • 项目类别:
    Continuing Grant
Pool-Boiling Liquid-Checking Limits Within and Above Modulated Porous-Layer Coating
池沸腾液体检查限制在调制多孔层涂层之内和之上
  • 批准号:
    9908961
  • 财政年份:
    1999
  • 资助金额:
    $ 29.12万
  • 项目类别:
    Standard Grant
U.S.-France Cooperative Research: Ebulliton in Porous Media
美法合作研究:多孔介质中的沸腾
  • 批准号:
    9603200
  • 财政年份:
    1997
  • 资助金额:
    $ 29.12万
  • 项目类别:
    Standard Grant
Porous-Silicon-Layer Adsorption Vapor Sensor
多孔硅层吸附蒸汽传感器
  • 批准号:
    9714157
  • 财政年份:
    1997
  • 资助金额:
    $ 29.12万
  • 项目类别:
    Standard Grant
Thermomechanical Aspects of Multicomponent Binder Melting and Evaporation in Thermal Debinding
热脱脂中多组分粘合剂熔化和蒸发的热机械方面
  • 批准号:
    9412609
  • 财政年份:
    1994
  • 资助金额:
    $ 29.12万
  • 项目类别:
    Standard Grant
Desorption of Soil Contaminants During Steam Cleaning
蒸汽清洁过程中土壤污染物的解吸
  • 批准号:
    9115746
  • 财政年份:
    1991
  • 资助金额:
    $ 29.12万
  • 项目类别:
    Continuing Grant
Particle/Wall and Partical/Boundary-Layer Interactions
粒子/壁和粒子/边界层相互作用
  • 批准号:
    8814368
  • 财政年份:
    1988
  • 资助金额:
    $ 29.12万
  • 项目类别:
    Standard Grant

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