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，可再生能源来扩展美国能源产品组合是当今社会中最紧急的需求之一。用溶液处理的有机半导体代替常规硅有望降低制造成本，并显着提高太阳能电池板的生产能力。这项教师的早期职业发展（职业）计划赠款将支持基础研究，以探讨优化的有机半导体水晶阵列的连续制造，以最大程度地吸收阳光吸收和发电。可以将有机半导体晶体形成和溶液沉积期间生长的薄脚手架直接掺入太阳能电池板中。作为控制解决方案相结晶的一种普遍策略，这项研究的发现将促进科学的进步，并在从一次性传感器到制药制造业的广泛科学学科中促进国家繁荣。通过让学生参与新兴的可再生能源技术，该项目将成为一个平台，以促进K-12学生和妇女在科学和工程领域的长期保留。纳米孔支架内晶体的限制是选择特定晶体方向和多晶型物的有力策略，并有助于对关键核大小和晶体生长机制的基本了解。该研究项目努力将成核事件限制在纳米级环境中，但允许随后的晶体生长在支架上方不受限制。在此过程中，将保留对晶体方向和结构的控制，同时显着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 - 基底相互作用以及处理条件，分子参数之间的关系与方向，核的方向，密度和结构将被发现。这些知识将用于建立设计原理以实现所需的结晶结果。例如，控制核的方向将使垂直有机半导体晶体阵列的首次实现，其中堆栈方向与溶液处理的有机太阳能电池中的电荷传输方向对齐。该研究策略将与连续的处理方法兼容，该方法将与用于在大多数最先进的有机太阳能电池中沉积活性层相比，将降低制造成本。该奖项反映了NSF的法定任务，并被认为是使用该基金会的知识分子功能和广泛影响的评估来审查CRITERIA的评估。