Collaborative Research: OP: Transition Metal Alloys: Emergent Properties for Near-Infrared Hot-Carrier Optoelectronics

合作研究:OP:过渡金属合金:近红外热载流子光电器件的新兴特性

基本信息

  • 批准号:
    2114312
  • 负责人:
  • 金额:
    $ 14万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2021
  • 资助国家:
    美国
  • 起止时间:
    2021-07-01 至 2025-06-30
  • 项目状态:
    未结题

项目摘要

Modern electronics are based on charge transport by electrons and holes in semiconductors. The behavior of carriers with excess energy, called “hot” carriers, is of particular interest. Hot-carrier materials have a broad range of applications including hydrogen production, local heating for nanotherapeutics, and photodetectors. Hot-carrier photodetectors show great promise due to their tunability and ultrafast response. Unfortunately, the low efficiencies of hot carrier materials have made them impractical for use in devices. The PIs have recently discovered that alloys of noble metals and transition metals have the potential to efficiently generate long-lived hot carriers, a breakthrough in the field. This project will investigate transition metal alloys and their ability to generate and efficiently transport above-equilibrium “hot” electrons and holes in an optoelectronic devices. The proposed work is expected to provide transformational advances in the efficiency of near-infrared hot-carrier photodetectors. Education and outreach for this project will teach students through research activities and will expose people of diverse ages and backgrounds to the concepts of alloying, metal-optics, and optoelectronics. The research team will involve graduate and undergraduate students to perform this research in the team's laboratories and partner with local middle and high schools to involve 6th through 12th-grade students in hands-on scientific work. High school students from local Baton Rouge high schools will participate in annual summer in-lab residency programs and middle-school students in the Philadelphia area will participate in a solar race by building, testing, and racing shoebox-sized solar powered cars. This project is jointly funded by the Electronic and Photonic Materials (EPM) and Metals and Metallic Nanostructures (MMN) programs of the Division of Materials Research.Hot-carrier generation in metals is a promising route to convert photons into electrical charges for near-infrared (NIR) optoelectronic devices. Hot-carrier optoelectronic devices offer below-bandgap charge generation, ultrafast response times, and spectral and polarization control. These features are expected to result in transformative advances in optoelectronics. However, current hot-carrier devices exhibit low efficiencies due to poor carrier generation and collection rates. Photoexcited metals can generate hot carriers via interband, intraband, and plasmon-assisted Landau damping. While noble metals have been extensively explored for generating hot carriers via interband transitions, NIR photons do not have enough energy to overcome their interband energy threshold. Intraband- and plasmon-driven hot-carrier generation can occur at these lower excitation energies, but only if additional momentum is provided. The research team hypothesizes that band hybridization in transition metal alloys will result in emergent properties and new pathways for NIR hot-carrier generation. The team recently reported that, when photoexcited at 1550 nm, an Au50Pd50 alloy having NIR accessible interband transitions exhibited 20-fold more 0.8 eV hot holes than pure Au and 3-times longer lifetime than pure Pd. The team will build on this exciting result by pursuing the following specific aims: 1). Use first-principles simulations to determine candidate transition metal alloys that excel at hot-carrier generation in the NIR, 2). Deposit alloy films via thermal co-evaporation and use resonant synchrotron-based photoemission to verify the predicted electronic properties, 3). Determine the effect alloying has on carrier lifetime using transient absorption spectroscopy and 4). Fabricate below-bandgap photoconductors using alloy absorbers and characterize their electrical response. The research team is well suited to pursue these aims with expertise in alloy theory, photoemission, metal film growth, device fabrication, and ultrafast spectroscopy. Transition metal alloys offer an exciting palette for synthesizing new hot-carrier materials, and the team is well-positioned to investigate their structure-function relationship.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.
现代电子学基于半导体中的电子和空穴的电荷传输。具有过剩能量的载流子(称为“热”载流子)的行为特别令人感兴趣。热载体材料具有广泛的应用,包括制氢、纳米治疗的局部加热和光电探测器。热载流子光电探测器由于其可调谐性和超快响应而显示出巨大的前景。不幸的是,热载流子材料的低效率使得它们在器件中的使用不切实际。PI最近发现,贵金属和过渡金属的合金有可能有效地产生长寿命的热载流子,这是该领域的一个突破。该项目将研究过渡金属合金及其在光电器件中产生和有效传输高于平衡的“热”电子和空穴的能力。预计这项工作将为近红外热载流子光电探测器的效率提供变革性的进步。该项目的教育和推广将通过研究活动教授学生,并将使不同年龄和背景的人接触合金,金属光学和光电子学的概念。研究团队将让研究生和本科生在团队的实验室进行这项研究,并与当地初中和高中合作,让6至12年级的学生参与实际科学工作。来自当地巴吞鲁日高中的高中生将参加一年一度的夏季实验室居住计划,费城地区的中学生将参加太阳能比赛,建造、测试和比赛鞋盒大小的太阳能汽车。该项目由材料研究部的电子和光子材料(Electronic and Photonic Materials,EMPs)和金属和金属纳米结构(Metals and Metallic Nanostructures,MMN)项目共同资助。金属中的热载流子生成是一种有前途的将光子转化为近红外(NIR)光电器件电荷的途径。热载流子光电器件提供带隙以下电荷产生、超快响应时间以及光谱和偏振控制。这些功能预计将导致光电子学的变革性进步。然而,由于差的载流子生成和收集速率,当前的热载流子器件表现出低效率。光激发金属可以通过带间、带内和等离子体辅助的朗道阻尼产生热载流子。虽然贵金属已经被广泛探索用于通过带间跃迁产生热载流子,但NIR光子没有足够的能量来克服它们的带间能量阈值。带内和等离子体激元驱动的热载流子产生可以发生在这些较低的激发能量,但只有当提供额外的动量。研究小组假设,过渡金属合金中的能带杂化将导致NIR热载流子产生的新特性和新途径。该团队最近报告说,当在1550 nm光激发时,具有NIR可访问带间跃迁的Au50 Pd 50合金显示出比纯Au多20倍的0.8 eV热空穴,比纯Pd长3倍的寿命。该团队将在这一令人兴奋的结果的基础上,追求以下具体目标:1)。使用第一原理模拟来确定在NIR中擅长热载流子生成的候选过渡金属合金,2)。通过热共蒸发沉积存款合金膜,并使用基于共振同步加速器的光电发射来验证预测的电子性质,3)。使用瞬态吸收光谱法确定合金化对载流子寿命的影响; 4).利用合金吸收体制作带隙以下的光电导体,并表征其电响应。该研究团队非常适合在合金理论,光电发射,金属薄膜生长,器件制造和超快光谱学方面的专业知识来实现这些目标。过渡金属合金为合成新的热载体材料提供了令人兴奋的调色板,该团队有能力研究其结构-功能关系。该奖项反映了NSF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。

项目成果

期刊论文数量(1)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Emergent properties from CuPd alloy films under near-infrared excitation
近红外激发下 CuPd 合金薄膜的新兴特性
  • DOI:
    10.1063/5.0102066
  • 发表时间:
    2022
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Manoukian, Gregory A.;Kizilkaya, Orhan;Lendinez, Sergi;Manuel, Luis D. B.;Leite, Tiago R.;Shirali, Karunya S.;Shelton, William A.;Sprunger, Phillip T.;Baxter, Jason B.;McPeak, Kevin M.
  • 通讯作者:
    McPeak, Kevin M.
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Jason Baxter其他文献

9: Performance of a proteomic preterm delivery predictor in a large independent prospective cohort
  • DOI:
    10.1016/j.ajog.2019.11.025
  • 发表时间:
    2020-01-01
  • 期刊:
  • 影响因子:
  • 作者:
    Glenn Markenson;George R. Saade;Louise C. Laurent;Kent Heyborne;Dean Coonrod;Corina N. Schoen;Jason Baxter;David M. Haas;Sherri Longo;William A. Grobman;Carol scott sullivan;Sarahn M. Major;leonardo Wheeler;Kim Pereira;Emily Boggess;Angela Su;Amy Hawk;Angela Crockett;Julja Fox; Burchard
  • 通讯作者:
    Burchard
Disparities in contraception in women with cardiovascular diseases in the cardiac-obstetrical clinic
  • DOI:
    10.1016/j.ajog.2022.11.1140
  • 发表时间:
    2023-01-01
  • 期刊:
  • 影响因子:
  • 作者:
    Laura E. Fiorini;Maria De Abreu Pineda;Jason Baxter;Rebekah McCurdy;Andria Jones;Indranee Rajapreyar;Amanda Roman
  • 通讯作者:
    Amanda Roman
14: Enhanced preterm delivery predictors: verification in a large independent prospective cohort
  • DOI:
    10.1016/j.ajog.2019.11.030
  • 发表时间:
    2020-01-01
  • 期刊:
  • 影响因子:
  • 作者:
    George R. Saade;Glenn Markenson;Louise C. Laurent;Kent Heyborne;Dean Coonrod;Corina N. Schoen;Jason Baxter;David M. Haas;Sherri Longo;William A. Grobman;Carol scott sullivan;Sarahn M. Major;leonardo Wheeler;Kim Pereira;Emily Boggess;Angela Su;Amy Hawk;Angela Crockett;Julja Fox; Burchard
  • 通讯作者:
    Burchard

Jason Baxter的其他文献

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{{ truncateString('Jason Baxter', 18)}}的其他基金

Scalable Manufacturing of Perovskite Photovoltaics by Controlled Crystallization During Slot Die Coating
通过狭缝模头涂覆过程中的受控结晶实现钙钛矿光伏的可扩展制造
  • 批准号:
    1933819
  • 财政年份:
    2019
  • 资助金额:
    $ 14万
  • 项目类别:
    Standard Grant
Collaborative Research: Directing Charge and Energy Flow in Discrete Nanocrystal-Dendrimer Hybrids and in Their Assemblies
合作研究:在离散纳米晶体-树枝状聚合物杂化物及其组件中引导电荷和能量流
  • 批准号:
    1708991
  • 财政年份:
    2017
  • 资助金额:
    $ 14万
  • 项目类别:
    Continuing Grant
Collaborative Research: SusCHEM: Environmental Sustainability of Lead Perovskite Solar Cells
合作研究:SusCHEM:铅钙钛矿太阳能电池的环境可持续性
  • 批准号:
    1704957
  • 财政年份:
    2017
  • 资助金额:
    $ 14万
  • 项目类别:
    Standard Grant
Collaborative Research: SusChEM: Using Ultrafast Carrier Dynamics to Link Structure, Properties, and Performance in Single-Crystal Cu2ZnSn(S,Se)4 for Thin Film Photovoltaics
合作研究:SusChEM:利用超快载流子动力学将薄膜光伏用单晶 Cu2ZnSn(S,Se)4 的结构、性质和性能联系起来
  • 批准号:
    1507988
  • 财政年份:
    2015
  • 资助金额:
    $ 14万
  • 项目类别:
    Standard Grant
Collaborative Research: Ultrafast Carrier Dynamics in Semiconductor Nanocrystal Solar Cells
合作研究:半导体纳米晶体太阳能电池中的超快载流子动力学
  • 批准号:
    1333649
  • 财政年份:
    2013
  • 资助金额:
    $ 14万
  • 项目类别:
    Standard Grant
Microreactor for High-Yield Solution Deposition of Thin Films and Nanowires
用于薄膜和纳米线高产率溶液沉积的微反应器
  • 批准号:
    1000111
  • 财政年份:
    2010
  • 资助金额:
    $ 14万
  • 项目类别:
    Standard Grant
CAREER: Interfaces and Their Effect on Charge Transfer in Extremely Thin Absorber Solar Cells
职业:极薄吸收太阳能电池中的界面及其对电荷转移的影响
  • 批准号:
    0846464
  • 财政年份:
    2009
  • 资助金额:
    $ 14万
  • 项目类别:
    Continuing Grant
MRI: Acquisition of an Ultrafast Laser System for Terahertz Spectroscopy and Sub-Picosecond Dynamics
MRI:获取用于太赫兹光谱和亚皮秒动力学的超快激光系统
  • 批准号:
    0922929
  • 财政年份:
    2009
  • 资助金额:
    $ 14万
  • 项目类别:
    Standard Grant

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Collaborative Research: OP: Meta-optical Computational Image Sensors
合作研究:OP:元光学计算图像传感器
  • 批准号:
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Collaborative Research: OP: Transition Metal Alloys: Emergent Properties for Near-Infrared Hot-Carrier Optoelectronics
合作研究:OP:过渡金属合金:近红外热载流子光电器件的新兴特性
  • 批准号:
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    2021
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