A Scalable Roll-to-Roll Printing Approach to Integrating Nanomaterials into High-Performance Devices

将纳米材料集成到高性能设备中的可扩展卷对卷打印方法

• 批准号: 1435521
• 负责人: Moonsub Shim
• 金额: $ 30万
• 依托单位: University of Illinois at Urbana-Champaign
• 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 2017-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1435521&HistoricalAwards=false
• 关键词: Scalable; Roll; Printing; Approach; Integrating

The emergence of a variety of high quality nanoscale materials in the last few decades have brought forth novel tunable properties with which new and improved technologies can be envisioned. Prospects include low-cost solar cells with unprecedented power conversion efficiencies to high-contrast biomedical imaging agents. While high-performance in laboratory scale devices incorporating nanoscale materials have been demonstrated, for many applications such as photovoltaics and displays, scalable manufacturing of high efficiency devices and device arrays is an absolute necessity. Currently, there are no clear pathways to achieving such practical large area, large arrays of complex, high performing structures. This award supports fundamental research to build the necessary foundation for developing a scalable roll-to-roll printing approach to assembling large arrays of nanoscale materials within functioning device architectures. Such an ability to integrate large arrays of nanoscale materials should enable manufacturing of a wide variety of electronic and optoelectronic devices from high-performance solar cells to energy efficient displays and lighting technologies. This multidisciplinary research involving materials, mechanical and manufacturing sciences as well as optoelectronics will provide research opportunities for students from underrepresented groups and promote/enhance engineering education.Heterogeneous integration of various 0D, 1D, and 2D nanomaterials such as quantum dots, carbon nanotubes, and graphene into vertically stacked multilayer structures allows for effective methods of utilizing the unique electrical and optical properties of these nanomaterials in a monolithic architecture. However, well-established fabrication processes such as photolithography are often incompatible with nanomaterials. Dry transfer printing using elastomeric stamps is a potential solution to this incompatibility problem but the nature of kinetically switchable adhesion of elastomers requires different peeling speeds between retrieval and printing steps. This requirement in turn introduces a grand challenge in employing elastomeric stamps to scalable roll-to-roll printing since retrieval and printing need to be carried out with the same roller, thus the same peeling speed. This research aims to explore shape memory polymers as stamp materials to replace kinetic control by stiffness control of dry adhesion and, furthermore, to enhance the adhesion force and switchability. The research team will examine the mechanics of shape memory polymers for transfer printing, investigate the fundamental properties of nanomaterials and interfaces assembled using shape memory polymer and apply the knowledge gained to assemble multilayer stacks consisting of nanomaterials and other relevant device components in a continuous roll-to-roll fashion.

过去几十年来，各种高质量纳米级材料的出现带来了新颖的可调特性，可以预见新的和改进的技术。前景包括具有前所未有的功率转换效率的低成本太阳能电池到高对比度生物医学成像剂。虽然结合纳米级材料的实验室规模器件的高性能已经得到证实，但对于光伏和显示器等许多应用来说，高效器件和器件阵列的可扩展制造是绝对必要的。目前，还没有明确的途径来实现如此实用的大面积、大阵列的复杂高性能结构。该奖项支持基础研究，为开发可扩展的卷对卷打印方法奠定必要的基础，以在功能设备架构中组装大量纳米级材料。这种集成大型纳米级材料阵列的能力应该能够制造从高性能太阳能电池到节能显示器和照明技术的各种电子和光电设备。这项涉及材料、机械和制造科学以及光电子学的多学科研究将为弱势群体的学生提供研究机会，并促进/加强工程教育。各种 0D、1D 和 2D 纳米材料（如量子点、碳纳米管和纳米材料）的异质集成将石墨烯垂直堆叠的多层结构允许有效地在整体结构中利用这些纳米材料独特的电学和光学特性。然而，光刻等成熟的制造工艺通常与纳米材料不兼容。使用弹性体印模的干转移印刷是解决这种不相容性问题的潜在解决方案，但弹性体的动力学可切换粘附的性质需要在检索和印刷步骤之间具有不同的剥离速度。这一要求反过来又给采用弹性印模进行可扩展的卷对卷印刷带来了巨大的挑战，因为检索和印刷需要使用相同的辊进行，因此需要相同的剥离速度。本研究旨在探索形状记忆聚合物作为印模材料，通过干粘附的刚度控制来代替动力学控制，并进一步增强粘附力和可切换性。研究小组将研究用于转移印刷的形状记忆聚合物的力学原理，研究使用形状记忆聚合物组装的纳米材料和界面的基本特性，并应用所获得的知识来组装由纳米材料和其他相关设备组件组成的连续卷状多层堆叠。滚动时尚。