MRI: Development of Joint-use Ultra-fast Pump-probe Instrument for Thin-films Experimental Research

MRI：用于薄膜实验研究的联合使用超快泵浦探针仪器的开发

基本信息

批准号：
1920368
负责人：
Pallavi Dhagat
金额：
$ 96.93万
依托单位：
Oregon State University
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2019
资助国家：
美国
起止时间：
2019-09-15 至 2023-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1920368&HistoricalAwards=false
关键词：
MRI Development Joint use Ultra

项目摘要

Non-Technical Description:This instrument development project delivers a versatile, shared-use experimental platform to enable ultrafast, pulsed laser measurements to systematically determine the properties and investigate fundamental physical processes in a variety of new optical, magnetic and electronic materials of interest for application in solar cells, information storage, low-power computing and signal processing. The platform is available for use to researchers nationwide, via the National Nanotechnology Coordinated Infrastructure initiative. It, vitally, also serves in the education and training of the next-generation of scientists and engineers in advanced instrument design and ultrafast laser measurement techniques for materials.Technical Description:The instrument combines robust commercial components with custom-built subsystems to provide the experimental flexibility necessary to support diverse measurement needs. The laser pulses are tunable over a wide spectral range (258 nm to 2500 nm) and temporal characteristics (25 fs to 10 ps) with a repetition rate from 1 kHz to 1 MHz. The instrument integrates a magneto-optic cryostat to vary the temperature (1.7 K to 350 K) and magnetic field (up to 7 T) environment of the sample and allow steady-state to radio-frequency (15 GHz) electrical excitation and detection. Custom-designed optical subsystems enable laser pulse stretching and compression, programmable spatial modulation of the pulses, and scanning confocal microscopy. Control software, with remote front panels, allows virtual use. Examples of studies supported by the instrument include vibrational coupling and charge-carrier dynamics in perovskite thin films, determination of anisotropic elastic properties for engineered functional materials, magnon-phonon coupling in novel magnetostrictive materials, and intrinsic internal quantum efficiency and ultrafast electron dynamics of materials used in solar absorber devices.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：该仪器开发项目提供了一种多功能，共享的实验平台，以实现超快的脉冲激光测量，以系统地确定属性并研究各种新的光学，磁性和电子材料在太阳能电池中应用，信息存储，低功耗计算和信号处理的基本物理过程。该平台可通过国家纳米技术协调基础设施计划可用于全国研究人员。它也从事材料的高级仪器设计和超快激光测量技术的下一代科学家和工程师的教育和培训。激光脉冲可在宽光谱范围内（258 nm至2500 nm）和时间特性（25 fs至10 ps）进行调谐，重复速率从1 kHz到1 MHz。该仪器集成了磁极的低温恒温器，以改变样品的温度（1.7 K至350 K）和磁场（最多7 t）环境，并允许稳态到射频（15 GHz）电气激发和检测。定制设计的光学子系统可实现激光脉冲拉伸和压缩，脉冲的可编程空间调制以及扫描共聚焦显微镜。具有远程前面板的控制软件允许虚拟使用。该仪器支持的研究示例包括钙钛矿薄膜中的振动耦合和电荷载体动力学，确定工程功能材料的各向异性弹性特性，新颖的磁性磁性材料中的镁 - 音波耦合，以及内在的量子效率和超级含量的元素含量的材料均具有材料的动力学，并在溶液中使用。使用基金会的知识分子优点和更广泛的审查标准，被认为值得通过评估来支持。

项目成果

期刊论文数量（13）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Optomagneto control of singlet fission charge multiplication dynamics in single organic semiconductor crystals

单个有机半导体晶体中单线态裂变电荷倍增动力学的光磁控制

DOI：
10.1364/cleo_fs.2023.ff2g.4
发表时间：
2023
期刊：
Optica Publishing Group
影响因子：
0
作者：
Mayonado, Gina;Zhu, Fangyi;Goldthwaite, Winston;Zhu, Liangdong;Anthony, John E.;Ostroverkhova, Oksana;Graham, Matt W.
通讯作者：
Graham, Matt W.

Illuminating Trap Density Trends in Amorphous Oxide Semiconductors with Ultrabroadband Photoconduction

DOI：
10.1002/adfm.202300742
发表时间：
2023-01
期刊：
Advanced Functional Materials
影响因子：
19
作者：
G. Mattson;Kyle T. Vogt;J. Wager;M. Graham
通讯作者：
G. Mattson;Kyle T. Vogt;J. Wager;M. Graham

Ultrafast Photocurrent and Absorption Microscopy of Few-Layer Transition Metal Dichalcogenide Devices That Isolate Rate-Limiting Dynamics Driving Fast and Efficient Photoresponse

DOI：
10.1021/acs.jpcc.0c02646
发表时间：
2020-03
期刊：
The Journal of Physical Chemistry C
影响因子：
0
作者：
Kyle T. Vogt;Sufei Shi;Feng Wang;M. Graham
通讯作者：
Kyle T. Vogt;Sufei Shi;Feng Wang;M. Graham

Shedding light on ultrafast ring-twisting pathways of halogenated GFP chromophores from the excited to ground state

DOI：
10.1039/d1cp02140k
发表时间：
2021-06-28
期刊：
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
影响因子：
3.3
作者：
Boulanger, Sean A.;Chen, Cheng;Fang, Chong
通讯作者：
Fang, Chong

Photophysics and photochemistry of functionalized anthradithiophene in microcavities

微腔中功能化蒽并噻吩的光物理和光化学

DOI：
10.1117/12.2632388
发表时间：
2022
期刊：
SPIE
影响因子：
0
作者：
Goldthwaite, Winston;Lamug, Roshell;Van Schenck, Jonathan;Puro, Richard;Anthony, John E.;Ostroverkhova, Oksana
通讯作者：
Ostroverkhova, Oksana