Synthesis and Optoelectronic Properties of Solid Solution MXenes

固溶体MXene的合成及光电性能

• 批准号: 2041050
• 负责人: Yury Gogotsi
• 金额: $ 60万
• 依托单位: Drexel University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-03-01 至 2025-02-28
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2041050&HistoricalAwards=false
• 关键词: Synthesis; Optoelectronic; Properties; Solid; Solution

NON-TECHNICAL DESCRIPTION: MXenes are a large class of two-dimensional carbides and nitrides that exhibit exceptional electronic, optical and charge storage properties. They were discovered at Drexel University a decade ago. MXenes are comprised of layers of metal atoms connected by carbon or nitrogen atoms and having thickness of less than one nanometer. Their unique combination of electronic conductivity and tunable optical properties, such as a wide range of plasmonic colors, may be a game-changer in optics and electronics. More than 30 different MXene compositions have been synthesized; dozens more are predicted to exist. However, in spite of total number of publications on MXenes approaching 3000, just a few solid solutions (structures with a random mix of metal atoms) have been reported. Solid solution MXenes that are synthesized in this study greatly expand the family of two-dimensional (2D) materials and offer an opportunity for precise tuning of electronic and optical properties of MXenes. These materials can find applications in the manufacturing of transparent conductive electrodes for solar cells, smart windows, transparent heaters, optical filters, etc. Courses covering synthesis and characterization of MXenes are developed as a part of this project and offered online. Graduate and undergraduate students participating in this project are offered research co-operative education and internships at the National Nanofabrication Facility in South Korea to learn nanofabrication and perform fabrication and testing of MXene-based optical devices, such as transparent light emission diodes and electrically tunable optical filters. TECHNICAL DETAILS: The primary goal of this work is to establish direct experimental relationships between chemical compositions of solid solution MXene and their resulting properties. Solid solution MXene research is expanded into diverse structures and chemistries in order to study and generalize these relationships, and thus to enable specific optical and plasmonic properties to be rationally chosen based on the desired application. This project includes (i) synthesis of quaternary MAX phase precursors with the desired compositions; (ii) finding the appropriate conditions for topochemical conversion of the MAX precursors into MXenes, (iii) determining the conductivity and optical properties of MXenes, and (iv) using an array of advanced characterization techniques to determine the composition and structure of solid-solution MXenes and correlate them with the measured properties.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：MXenes是一大类二维碳化物和氮化物，具有卓越的电子，光学和电荷存储特性。十年前在德雷克塞尔大学被发现。MXene由碳或氮原子连接的金属原子层组成，厚度小于1纳米。它们独特的电子导电性和可调光学特性的组合，例如广泛的等离子体颜色，可能会改变光学和电子学的游戏规则。已经合成了30多种不同的MXene组合物;预计还会有几十种。然而，尽管关于MXene的出版物总数接近3000，但只有少数固溶体（具有金属原子随机混合的结构）被报道。在这项研究中合成的固溶体MXene大大扩展了二维（2D）材料的家族，并为MXene的电子和光学性质的精确调谐提供了机会。这些材料可用于制造太阳能电池、智能窗、透明加热器、滤光器等的透明导电电极。作为该项目的一部分，开发了涵盖MXene合成和表征的课程，并在线提供。参与该项目的研究生和本科生在韩国国家纳米制造设施提供研究合作教育和实习机会，以学习纳米制造并进行基于MXene的光学器件的制造和测试，例如透明发光二极管和电可调谐光学滤波器。 技术规格：这项工作的主要目标是建立固溶体MXene的化学组成与其所得性质之间的直接实验关系。固溶体MXene的研究扩展到不同的结构和化学，以研究和推广这些关系，从而使特定的光学和等离子体特性能够根据所需的应用进行合理选择。该项目包括（i）合成具有所需组成的四元MAX相前体;（ii）找到MAX前体向MXene的局部化学转化的适当条件，以及（iv）使用一系列先进的表征技术来确定固体的组成和结构，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

Shifts in valence states in bimetallic MXenes revealed by electron energy-loss spectroscopy (EELS)

• DOI: 10.1088/2053-1583/ac4ba2
• 发表时间: 2022-01
• 期刊: 2D Materials
• 影响因子: 5.5
• 作者: Alexandre C. Foucher;Meikang Han;C. Shuck;K. Maleski;Y. Gogotsi;E. Stach

2D graphene oxide and MXene nanosheets at carbon fiber surfaces

• DOI: 10.1016/j.carbon.2022.11.028
• 发表时间: 2022-11-28
• 期刊: CARBON
• 影响因子: 10.9
• 作者: Adstedt, Katarina;Buxton, Madeline L.;Tsukruk, Vladimir V.
• 通讯作者: Tsukruk, Vladimir V.

Adjustable electrochemical properties of solid-solution MXenes

• DOI: 10.1016/j.nanoen.2021.106308
• 发表时间: 2021-10
• 期刊: Nano Energy
• 影响因子: 17.6
• 作者: Likui Wang;Meikang Han;C. Shuck;Xuehang Wang;Y. Gogotsi

Electrochemically modulated interaction of MXenes with microwaves

• DOI: 10.1038/s41565-022-01308-9
• 发表时间: 2023-01-16
• 期刊: NATURE NANOTECHNOLOGY
• 影响因子: 38.3
• 作者: Han, Meikang;Zhang, Danzhen;Gogotsi, Yury
• 通讯作者: Gogotsi, Yury

MXene‐Nanoflakes‐Enabled All‐Optical Nonlinear Activation Function for On‐Chip Photonic Deep Neural Networks

MXene – Nanoflakes – 启用片上光子深度神经网络的所有光学非线性激活函数

• DOI: 10.1002/adma.202210216
• 发表时间: 2023
• 期刊: Advanced Materials
• 影响因子: 29.4
• 作者: Hazan, Adir;Ratzker, Barak;Zhang, Danzhen;Katiyi, Aviad;Sokol, Maxim;Gogotsi, Yury;Karabchevsky, Alina
• 通讯作者: Karabchevsky, Alina