Continuous Manufacturing of Lead-free Halide Perovskite Nanocrystals Using a Microreactor System

使用微反应器系统连续制造无铅卤化物钙钛矿纳米晶体

• 批准号: 1854554
• 负责人: Fuqian Yang
• 金额: $ 32.5万
• 依托单位: University of Kentucky Research Foundation
• 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: 2019-07-01 至 2023-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1854554&HistoricalAwards=false
• 关键词: Continuous; Manufacturing; Lead; free; Halide

This grant supports research that advances knowledge to manufacture systems such as high efficiency solar cells, affordable photovoltaics, flexible color displays and biosensors more quickly, less expensively and free of the lead that results from more traditional manufacturing approaches. Lead-free metal halide perovskite nanocrystals emit light from the ultraviolet to the visible. Their wide use is dependent on the development of techniques for their scalable, low cost manufacturing. They are also candidates for replacement of lead-based perovskites, which are toxic. Most methods to manufacture perovskite nanocrystals are based on single batch approach, which has limited production capacity and considerable product variability. Research here will support a continuous manufacturing process. The ability to manufacture semiconductor nanocrystals in microfluidic-microreactor systems enables their fabrication with the desired size, shape and properties, thus, accelerating their applications in a variety of industries. The successful development of a scalable method to manufacture high-quality lead-free halide perovskite nanocrystals enables the development of continuously manufactured lead-free metal halide perovskite nanocrystals that leads to progress in the fundamental science of inorganic semiconductors. The results from this research help maintain and enhance U.S. competitiveness and leadership in these technologies, thus contributing to the nation's prosperity. The multidisciplinary nature of this research prepares the needed future workforce for U.S. industries with knowledge and skills in advanced materials and manufacturing. Special efforts are focused on the participation and training of women and under-represented minorities.Using microfluidic-microreactor systems can overcome the difficulty in controlling the processing parameters, such as, temperature, time and local concentration for the fabrication of perovskite nanocrystals in the single batch methods and offer a possible approach to manufacture them with very short reaction time and high throughput. The lack of an understanding of the thermodynamics and kinetics controlling the formation and growth of nanocrystals in a fluidic system has hindered the development of microfluidic-microreactor systems to produce monodispersed nanocrystals of the same geometrical shapes. This research is to develop a polytetrafluoroethylene-based microreactor in a microfluidic system with in-line monitoring for continuous fabrication of metal halide perovskite nanocrystals and to investigate the fundamental mechanisms controlling their formation and growth. The research team establishes correlations between the processing parameters, such as, concentration, temperature, residence time and flow rate, and perovskite nanocrystal characteristics, such as, morphology and size. The team develops numerical models that can quantitatively analyze the growth of semiconductor nanocrystals in the microreactor system. These correlations provide fundamental understanding of the kinetics controlling the size distribution and morphologies of nanocrystals and help optimize the microreactor design for the scalable manufacturing of high-quality perovskite nanocrystals.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.

该补助金支持的研究，推进知识制造系统，如高效率的太阳能电池，负担得起的光电转换器，灵活的彩色显示器和生物传感器更快，更便宜和免费的铅，从更传统的制造方法的结果。 无铅金属卤化物钙钛矿纳米晶体发射从紫外到可见光的光。它们的广泛使用取决于其可扩展的低成本制造技术的发展。它们也是替代有毒的铅基钙钛矿的候选物。大多数制造钙钛矿纳米晶体的方法都是基于单批方法，其生产能力有限，产品可变性相当大。 这里的研究将支持一个连续的制造过程。 在微流控微反应器系统中制造半导体纳米晶体的能力使其能够以所需的尺寸，形状和特性进行制造，从而加速其在各种行业中的应用。制造高质量无铅卤化物钙钛矿纳米晶体的可扩展方法的成功开发使得能够开发连续制造的无铅金属卤化物钙钛矿纳米晶体，这导致无机半导体基础科学的进步。这项研究的结果有助于保持和加强美国在这些技术方面的竞争力和领导地位，从而为国家的繁荣做出贡献。这项研究的多学科性质为美国工业未来所需的劳动力提供了先进材料和制造业的知识和技能。特别的努力集中在妇女和代表性不足的少数民族的参与和培训。使用微流体微反应器系统可以克服在单批方法中控制工艺参数的困难，例如，温度，时间和局部浓度，以制造钙钛矿纳米晶体，并提供一种可能的方法，以非常短的反应时间和高产量制造它们。缺乏对流体系统中控制纳米晶体形成和生长的热力学和动力学的理解，阻碍了微流体-微反应器系统的发展，以生产相同几何形状的单分散纳米晶体。本研究旨在开发一种具有在线监测功能的微流控系统中基于聚乙烯的微反应器，用于金属卤化物钙钛矿纳米晶体的连续制备，并研究控制其形成和生长的基本机制。研究小组建立了工艺参数（如浓度、温度、停留时间和流速）与钙钛矿结构特征（如形态和尺寸）之间的相关性。该团队开发了可以定量分析微反应器系统中半导体纳米晶体生长的数值模型。这些相关性提供了对控制纳米晶体尺寸分布和形态的动力学的基本理解，并有助于优化微反应器设计，以实现高质量钙钛矿纳米晶体的可扩展制造。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

Nitrogen-induced shift of photoluminescence from green to blue emission for xylose-derived carbon dots

• DOI: 10.1088/2632-959x/aba771
• 发表时间: 2020-07
• 期刊: Nano Express
• 影响因子: 3
• 作者: Shanshan Wang;Dong-Sheng Yang;Fuqian Yang

MAPbBr 3 nanocrystals from aqueous solution for poly(methyl methacrylate)-MAPbBr 3 nanocrystal films with compression-resistant photoluminescence

来自水溶液的 MAPbBr 3 纳米晶体用于具有抗压缩光致发光的聚（甲基丙烯酸甲酯）-MAPbBr 3 纳米晶体薄膜

• DOI: 10.1088/1361-6528/ac59e8
• 发表时间: 2022
• 期刊: Nanotechnology
• 影响因子: 3.5
• 作者: Tang, Xiaobing;Zhang, Yulin;Kothalawala, Nadeesha Lakmali;Wen, Xiyu;Kim, Doo Young;Yang, Fuqian
• 通讯作者: Yang, Fuqian

Ultra-stable blue-emitting lead-free double perovskite Cs 2 SnCl 6 nanocrystals enabled by an aqueous synthesis on a microfluidic platform

在微流体平台上通过水相合成实现超稳定的蓝光无铅双钙钛矿 Cs 2 SnCl 6 纳米晶体

• DOI: 10.1039/d2nr05510d
• 发表时间: 2022
• 期刊: Nanoscale
• 影响因子: 6.7
• 作者: Tang, Xiaobing;Wen, Xiyu;Yang, Fuqian
• 通讯作者: Yang, Fuqian

Modeling analysis of the growth of a cubic crystal in a finite space

有限空间中立方晶体生长的建模分析

• DOI: 10.1039/d2cp00260d
• 发表时间: 2022
• 期刊: Physical Chemistry Chemical Physics
• 影响因子: 3.3
• 作者: Yang, Fuqian

Kinetic analysis of the growth behavior of perovskite CsPbBr 3 nanocrystals in a microfluidic system

微流体系统中钙钛矿CsPbBr 3 纳米晶体生长行为的动力学分析

• DOI: 10.1039/d2lc00331g
• 发表时间: 2022
• 期刊: Lab on a Chip
• 影响因子: 6.1
• 作者: Tang, Xiaobing;Yang, Fuqian
• 通讯作者: Yang, Fuqian