CAREER: Engineering Arrays of Organic Light Harvesting Crystals from Solution

职业：从溶液中收集有机光晶体的工程阵列

• 批准号: 2115193
• 负责人: Stephanie Lee
• 金额: $ 50万
• 依托单位: New York University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-01-01 至 2024-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2115193&HistoricalAwards=false
• 关键词: CAREER; Engineering; Arrays; Organic; Light

Inexpensive sources of clean, renewable energy to expand the US energy portfolio are among the most urgent needs of today's society. Substituting conventional silicon with solution-processed organic semiconductors promises to drive down manufacturing costs and significantly increase the production capacity of solar panels. This Faculty Early Career Development (CAREER) Program grant will support fundamental research addressing the continuous manufacturing of organic semiconductor crystal arrays optimized for maximum sunlight absorption and electricity generation. Thin scaffolds that can guide organic semiconductor crystal formation and growth during deposition from solution will be incorporated directly into solar panels. As a generalizable strategy to control solution-phase crystallization, the findings from this research will promote the progress of science and advance the national prosperity in a broad range of scientific disciplines, from disposable sensors to pharmaceutical manufacturing. By engaging students in emerging renewable energy technologies, this project will serve as a platform to promote long-term retention of K-12 students and women in science and engineering. Confinement of crystals within nanoporous scaffolds is a powerful strategy to select for specific crystal orientations and polymorphs and has contributed to a fundamental understanding of critical nucleus sizes and crystal growth mechanisms. This research project endeavors to restrict nucleation events to nanoscale environments but allow subsequent crystal growth to proceed unconfined above the scaffolds. In doing so, control over the crystal orientation and structure will be retained while significantly increasing the accessible crystal surface area. By systematically varying solute-solvent interactions, solute-substrate interactions, and processing conditions, relationships between molecular parameters and the orientation, density and structure of nuclei will be uncovered. Such knowledge will be used to establish design principles to achieve desired crystallization outcomes. For example, control over the orientation of nuclei will enable the first realization of vertical organic semiconductor crystal arrays in which the stack direction is aligned with the charge transport direction in solution-processed organic solar cells. This research strategy will be compatible with continuous processing methods that will drive down manufacturing costs compared to conventional batch spin coating used to deposit active layers in the majority of the state-of-the-art organic solar cells.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.

廉价的清洁、可再生能源以扩大美国的能源组合，是当今社会最紧迫的需求之一。用溶液处理的有机半导体取代传统的硅有望降低制造成本，并显著提高太阳能电池板的产能。这项学院早期职业发展(Career)计划拨款将支持针对有机半导体晶体阵列的连续制造的基础研究，该阵列优化为最大限度地吸收阳光和发电。在溶液沉积过程中，可以引导有机半导体晶体形成和生长的薄支架将直接整合到太阳能电池板中。作为控制溶液相结晶的一种通用策略，这项研究的发现将在从一次性传感器到药物制造的广泛科学学科中促进科学进步和国家繁荣。通过让学生参与新兴的可再生能源技术，该项目将成为促进K-12学生和妇女长期留住科学和工程专业的平台。在纳米多孔支架中限制晶体是一种选择特定晶体取向和晶型的有效策略，有助于从根本上理解关键的核尺寸和晶体生长机制。这项研究项目致力于将成核事件限制在纳米级环境中，但允许后续的晶体生长在支架上方不受限制地进行。在这样做时，将保留对晶体取向和结构的控制，同时显著增加可访问的晶体表面积。通过系统地改变溶质-溶剂相互作用、溶质-底物相互作用和工艺条件，将揭示分子参数与原子核的取向、密度和结构之间的关系。这些知识将被用来建立设计原则，以实现预期的结晶结果。例如，控制原子核的取向将使第一次实现垂直有机半导体晶体阵列，其中堆叠方向与溶液处理有机太阳能电池中的电荷传输方向对齐。这一研究战略将与连续处理方法兼容，与用于在大多数最先进的有机太阳能电池中沉积有源层的传统批量旋涂相比，连续处理方法将降低制造成本。该奖项反映了NSF的法定使命，并已通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。