MRI: Development of Novel Instrumentation to Probe Nanoscale Charge Carrier Dynamics with high Temporal and Spatial Resolution

MRI：开发新型仪器以高时空分辨率探测纳米级载流子动力学

• 批准号: 1428992
• 负责人: Quinn Qiao
• 金额: $ 45.01万
• 依托单位: South Dakota State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-09-01 至 2019-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1428992&HistoricalAwards=false
• 关键词: MRI; Development; Novel; Instrumentation; Probe

PI: Qiao, QiquanProposal: 1428992Title: MRI: Development of Novel Instrumentation to Probe Nanoscale Charge Carrier Dynamics with high Temporal and Spatial ResolutionSignificanceThis instrumentation will significantly accelerate Photo Activated Nanoscale System (PANS) and the Center for Advanced Photovoltics (CAP) research on converting solar energy into low-cost electricity, enhance the research and education activities of South Dakota State University?s Ph.D. program focused on photovoltaics, and aid South Dakota?s ability to attract top researchers and students to conduct leading-edge research. The research team will integrate this tool into several undergraduate and graduate courses to improve the quality of student education and research training. This tool is also expected to stimulate the economy by speeding up the development of new cost-effective photovoltaic technologies and the commercial production of a new instrument for nanoscale GHz transient measurement. This project will broaden participation in science and engineering research by actively involving female and Native American undergraduate and graduate students. The PI will encourage female students from his undergraduate and graduate classes to participate in this project and will work with tribal colleges to recruit the involvement of Native American students.Technical DescriptionThe objective of this MRI project is to develop a state-of-the-art atomic force microscope (AFM) based instrumentation integrated with bias modulated hardware to probe local charge carrier dynamics in nanostructured and disordered materials with high spatial and temporal resolution. This instrument will enable researchers to understand and quantify charge transport parameters in various organicsemiconductors, inorganic nanostructures, and their hybrids. The integrated measurement system will probe charge carrier dynamics and map carrier density, transport/recombination lifetimes, diffusion length, mobility, and recombination rates with high spatial (nm) and temporal (sub-ìs) resolution in a wide variety of photovoltaic materials and devices based on a modified conductive AFM (C-AFM)scanner head integrated with modulated bias hardware (function generator, frequency response analyzer, and modulated laser sources).

题目：MRI：新型仪器的发展，以探测高时空分辨率的纳米尺度电荷载流子动力学意义该仪器将显著加快光活化纳米尺度系统（PANS）和先进光伏中心（CAP）将太阳能转化为低成本电力的研究，加强南达科他州立大学的研究和教育活动？美国的博士项目专注于光伏发电，并援助南达科他州？吸引顶尖研究人员和学生进行前沿研究的能力。研究小组将把这个工具整合到几个本科和研究生课程中，以提高学生教育和研究训练的质量。该工具还有望通过加速开发新的具有成本效益的光伏技术和用于纳米级GHz瞬态测量的新仪器的商业化生产来刺激经济。该项目将通过积极参与女性和印第安人本科生和研究生，扩大科学和工程研究的参与。PI将鼓励他的本科和研究生班的女学生参与这个项目，并将与部落学院合作，招募美国土著学生。技术描述本MRI项目的目标是开发一种基于最先进的原子力显微镜（AFM）的仪器，该仪器集成了偏置调制硬件，以高空间和时间分辨率探测纳米结构和无序材料中的局部载流子动力学。该仪器将使研究人员能够理解和量化各种有机半导体、无机纳米结构及其杂化物中的电荷输运参数。集成测量系统将探测电荷载流子动力学，绘制载流子密度、输运/重组寿命、扩散长度、迁移率和重组率，在各种光伏材料和器件中具有高空间（nm）和时间（sub-ìs）分辨率，该系统基于改进的导电AFM （C-AFM）扫描仪头，该扫描仪头集成了调制偏置硬件（函数发生器、频率响应分析仪和调制激光源）。