Materials World Network: Growth, Kinetics, and Morphology of Multi-Layered Organic Thin Films via Low-Energy Secondary Ion Mass Spectrometry

材料世界网络:通过低能二次离子质谱法研究多层有机薄膜的生长、动力学和形态

基本信息

项目摘要

This project is based on a partnership between three research groups, one at the Science and Analysis of Materials (SAM) Department at the G. Lippmann Research Center in Luxembourg and two at the Materials Science Department of the University of Michigan (UM). This partnership merges resources that are not available to each participant individually. The purpose of this research is to investigate the shape, compositional definition, and energetics of interfaces in vapor-deposited multi-layer organic semiconductor thin films and devices fabricated by one of the UM groups. The increasing sophistication of optoelectronic devices requires molecular-level dimensional control in the fabrication of multi-layered structures with specifically engineered interfaces. However, the effectiveness of growth and doping strategies devised to achieve the desired device structures oftentimes remains unverified due to the lack adequate characterization techniques. This is particularly true for devices based on conjugated organic compounds, which find increasing use in energy applications (e.g. organic light-emitting diodes and organic photovoltaic cells, etc.). The buried interfaces are simply inaccessible or suffer damage when using conventional characterization techniques. Low-energy secondary ion mass spectrometry (LE-SIMS), a specialty of the SAM group, provides a promising avenue for the analysis of organic-based thin-film layered structures, because sub-keV impact energies of the primary ions result in reduced fragmentation of molecular species at the specimen surface. The physics of the collision cascades and the processes that lead to the ejection of secondary ions at low energies is still poorly understood, and a unified formalism for the identification of ejected species does not yet exist. Pursuing this knowledge, the other UM group combines large-scale molecular dynamics (MD) simulations with first-principles density functional theory (DFT) calculations to study the detailed atomic trajectories in collision cascades and predict the nature of ejected molecular fragments. This computational framework serves to interpret experimental data obtained from LE-SIMS, thereby improving the depth resolution of the technique and its ability to reliably identify organic molecular species, thus further establishing LE-SIMS as a technique for depth-profiling organic thin film materials.The goal of this project is to establish the relationship between growth conditions, structure, and properties of multi-layer thin film organic semiconductors with unprecedented precision. Fundamental insights for the advancement of organic electronic device design and fabrication techniques are anticipated. The project serves as the basis for three Ph.D. theses. Students benefit from a diverse educational experience through exchange visits to partner institutions, remote interactions between researchers, sharing of data, and the use of cyber infrastructure for the dissemination of findings through. Undergraduate students are involved directly at an academic level, and K-12 students through new outreach initiatives at UM.
该项目是基于三个研究小组之间的合作,一个在材料科学和分析(SAM)部门在G。在卢森堡的李普曼研究中心和密歇根大学(UM)材料科学系的两个。 这种伙伴关系合并了每个参与者无法单独使用的资源。 本研究的目的是调查的形状,成分的定义,并在气相沉积的多层有机半导体薄膜和设备制造的UM组之一的接口的能量。 光电器件的日益复杂化要求在具有专门设计的界面的多层结构的制造中进行分子水平的尺寸控制。然而,由于缺乏足够的表征技术,为实现所需器件结构而设计的生长和掺杂策略的有效性通常仍未得到验证。这对于基于共轭有机化合物的器件尤其如此,其在能源应用中的用途越来越多(例如有机发光二极管和有机光伏电池等)。当使用传统的表征技术时,掩埋的界面是简单地不可接近的或遭受损坏。 低能二次离子质谱(LE-SIMS)是SAM小组的一项专业技术,为分析有机基薄膜分层结构提供了一种有前途的途径,因为一次离子的亚keV撞击能量会减少分子的碎裂。物种在样本表面。 碰撞级联的物理学和导致低能二次离子喷射的过程仍然知之甚少,并且还不存在用于识别喷射物质的统一形式。 追求这一知识,其他UM组结合大规模分子动力学(MD)模拟与第一性原理密度泛函理论(DFT)计算,研究碰撞级联中的详细原子轨迹,并预测喷射分子碎片的性质。 该计算框架用于解释LE-SIMS获得的实验数据,从而提高该技术的深度分辨率和可靠识别有机分子种类的能力,从而进一步确立LE-SIMS作为深度剖析有机薄膜材料的技术。和性质的多层薄膜有机半导体以前所未有的精度。 有机电子器件设计和制造技术的进步的基本见解。 该项目作为三个博士学位的基础。论文 学生通过对合作机构的互访,研究人员之间的远程互动,数据共享以及使用网络基础设施传播研究结果,从多样化的教育体验中受益。 本科生直接参与学术层面,K-12学生通过UM的新外展活动。

项目成果

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John Kieffer其他文献

Cs oxide aggregation in SIMS craters in organic samples for optoelectronic application
  • DOI:
    10.1016/j.susc.2012.04.003
  • 发表时间:
    2012-08-01
  • 期刊:
  • 影响因子:
  • 作者:
    Khanh Q. Ngo;Patrick Philipp;John Kieffer;Tom Wirtz
  • 通讯作者:
    Tom Wirtz
Polarity-induced dual room-temperature phosphorescence involving the T2 states of pure organic phosphors
涉及纯有机磷光体 T2 态的极性诱导双室温磷光
  • DOI:
    10.1039/d2tc02152h
  • 发表时间:
    2022
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Lixin Zang;Wenhao Shao;Onas Bolton;Ramin Ansari;Seong-Jun Yoon;Jung-Moo Heo;John Kieffer;Adam Matzger;Jinsang Kim
  • 通讯作者:
    Jinsang Kim
Prevalence of chlamydia and gonorrhea in US Air Force male basic trainees
美国空军男性基础学员衣原体和淋病患病率
  • DOI:
  • 发表时间:
    2023
  • 期刊:
  • 影响因子:
    3.6
  • 作者:
    Jacqueline Kate Wade;Joseph E. Marcus;John Kieffer;Korey Kasper;Joshua Smalley
  • 通讯作者:
    Joshua Smalley
Artists of the new wave
新浪潮艺术家
Fragility and the rate of change of the energy landscape topography
  • DOI:
    10.1016/j.nocx.2022.100101
  • 发表时间:
    2022-06-01
  • 期刊:
  • 影响因子:
  • 作者:
    Cameran Beg;John Kieffer
  • 通讯作者:
    John Kieffer

John Kieffer的其他文献

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{{ truncateString('John Kieffer', 18)}}的其他基金

Comparative Evaluation of Ionic Transport Mechanisms in Solid-State Electrolytes
固态电解质中离子传输机制的比较评估
  • 批准号:
    1610742
  • 财政年份:
    2016
  • 资助金额:
    $ 60万
  • 项目类别:
    Continuing Grant
DMREF: SusChEM: Simulation-Based Predictive Design of All-Organic Phosphorescent Light-Emitting Molecular Materials
DMREF:SusChEM:基于模拟的全有机磷光发光分子材料的预测设计
  • 批准号:
    1435965
  • 财政年份:
    2014
  • 资助金额:
    $ 60万
  • 项目类别:
    Standard Grant
Active Regulation of Thermal Boundary Conductance
热边界传导的主动调节
  • 批准号:
    1402845
  • 财政年份:
    2014
  • 资助金额:
    $ 60万
  • 项目类别:
    Standard Grant
Optimizing Ion Mobility, Chemical Stability, and Mechanical Rigidity in Composite Electrolytes
优化复合电解质中的离子淌度、化学稳定性和机械刚性
  • 批准号:
    1106058
  • 财政年份:
    2011
  • 资助金额:
    $ 60万
  • 项目类别:
    Continuing Grant
Perturbation Codes: A New Class of Linear Convolutional Codes
扰动码:一类新的线性卷积码
  • 批准号:
    0830381
  • 财政年份:
    2008
  • 资助金额:
    $ 60万
  • 项目类别:
    Standard Grant
Collaborative Research: Information Theory of Data Structures
合作研究:数据结构信息论
  • 批准号:
    0830457
  • 财政年份:
    2008
  • 资助金额:
    $ 60万
  • 项目类别:
    Standard Grant
Enhancing Materials Science and Engineering Curricula through Computation
通过计算加强材料科学与工程课程
  • 批准号:
    0633180
  • 财政年份:
    2007
  • 资助金额:
    $ 60万
  • 项目类别:
    Standard Grant
Structural Developments in Ion-Implanted Sol-Gel Films and Resulting Glasses
离子注入溶胶-凝胶薄膜和所得玻璃的结构发展
  • 批准号:
    0605905
  • 财政年份:
    2006
  • 资助金额:
    $ 60万
  • 项目类别:
    Standard Grant
Polyamorphism and Structural Transitions during Glass Formation
玻璃形成过程中的多晶现象和结构转变
  • 批准号:
    0230662
  • 财政年份:
    2001
  • 资助金额:
    $ 60万
  • 项目类别:
    Standard Grant
Polyamorphism and Structural Transitions during Glass Formation
玻璃形成过程中的多晶现象和结构转变
  • 批准号:
    0072258
  • 财政年份:
    2000
  • 资助金额:
    $ 60万
  • 项目类别:
    Standard Grant

相似国自然基金

国际心脏研究会第二十三届世界大会(XXIII World Congress ISHR)
  • 批准号:
    81942001
  • 批准年份:
    2019
  • 资助金额:
    10 万元
  • 项目类别:
    专项基金项目

相似海外基金

Materials World Network: Collaborative Proposal: Understanding the Optical Response of Designer Epsilon Near Zero Materials
材料世界网络:协作提案:了解设计师 Epsilon 近零材料的光学响应
  • 批准号:
    1711849
  • 财政年份:
    2016
  • 资助金额:
    $ 60万
  • 项目类别:
    Continuing Grant
Materials World Network, SusChEM: Hybrid Sol-Gel Route to Chromate-free Anticorrosive Coatings
材料世界网络,SusChEM:混合溶胶-凝胶路线制备无铬酸盐防腐涂料
  • 批准号:
    1313544
  • 财政年份:
    2014
  • 资助金额:
    $ 60万
  • 项目类别:
    Standard Grant
Materials World Network: Development of high-efficiency photovoltaic devices for optimal performance under a broad range of spectral illumination conditions
材料世界网络:开发高效光伏器件,在广泛的光谱照明条件下实现最佳性能
  • 批准号:
    239013293
  • 财政年份:
    2013
  • 资助金额:
    $ 60万
  • 项目类别:
    Research Grants
Materials World Network: Electron-lattice dynamics at an atomically controlled buried interface
材料世界网络:原子控制掩埋界面的电子晶格动力学
  • 批准号:
    240640164
  • 财政年份:
    2013
  • 资助金额:
    $ 60万
  • 项目类别:
    Research Grants
Materials World Network, SusChEM: Collaborative Electron-lattice Dynamics at an Atomically Controlled Buried Interface
材料世界网络,SusChEM:原子控制掩埋界面的协同电子晶格动力学
  • 批准号:
    1311849
  • 财政年份:
    2013
  • 资助金额:
    $ 60万
  • 项目类别:
    Standard Grant
Materials World Network: Crackling Noise
材料世界网:噼啪声
  • 批准号:
    1312160
  • 财政年份:
    2013
  • 资助金额:
    $ 60万
  • 项目类别:
    Standard Grant
Materials World Network: Investigations of Quantum Fluctuation Relations Using Superconducting Qubits
材料世界网络:利用超导量子位研究量子涨落关系
  • 批准号:
    1312421
  • 财政年份:
    2013
  • 资助金额:
    $ 60万
  • 项目类别:
    Standard Grant
Materials World Network, SusChEM: Control of Interfacial Chemistry in Reactive Nanolaminates (CIREN)
材料世界网络,SusChEM:反应性纳米层压材料中界面化学的控制(CIREN)
  • 批准号:
    1312525
  • 财政年份:
    2013
  • 资助金额:
    $ 60万
  • 项目类别:
    Standard Grant
Materials World Network: Particle-Mediated Control Over Crystallization: From the Pre-Nucleation Stage to the Final Crystal
材料世界网络:粒子介导的结晶控制:从预成核阶段到最终晶体
  • 批准号:
    1312697
  • 财政年份:
    2013
  • 资助金额:
    $ 60万
  • 项目类别:
    Standard Grant
Materials World Network: New Functionality in Complex Magnetic Structures with Perpendicular Anisotropy
材料世界网络:具有垂直各向异性的复杂磁结构的新功能
  • 批准号:
    1312750
  • 财政年份:
    2013
  • 资助金额:
    $ 60万
  • 项目类别:
    Standard Grant
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