CAREER: Optical and Nanostructural Control of Visibly-Transparent Small-Bandgap Excitonic Semiconductors for Integration in Highly-Efficient Transparent Photovoltaics

职业：可见光透明小带隙激子半导体的光学和纳米结构控制，用于高效透明光伏发电的集成

• 批准号: 1254662
• 负责人: Richard Lunt
• 金额: $ 40.98万
• 依托单位: Michigan State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-01-01 至 2017-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1254662&HistoricalAwards=false
• 关键词: CAREER; Optical; Nanostructural; Control; Visibly

PI: Lunt, RichardProposal Number: 1254662Institution: Michigan State UniversityTitle: CAREER: Optical and Nanostructural Control of Visibly-Transparent Small-Bandgap Excitonic Semiconductors for Integration in Highly-Efficient Transparent PhotovoltaicsThe solar cells that are integrated in the building itself are an enticing energy pathway to utilize a large area for solar energy and while achieving a high building energy-efficiency. However, this effort is hampered by the need for mounting tradition photovoltaic (PV) cells in the built environment due to the cost and architectural impediments. The development of light weight and flexible solar cells that are transparent can address this problem. This project will perform research that will lead to the development of transparent PV. Specifically this project will utilize the excitonic character of small-bandgap molecules and organic semiconductors that leads to "oscillator bunching" to produce selectively near-infrared harvesting. The transparent PV architectures with power production from infrared photons alone have the potential to exhibit theoretical and practical efficiencies of 35% and 21%, respectively, while leaving the visible part of the spectrum completely unaffected. Intellectual merit:In this project, the foundation for the transparent solar cell will be crystal-orientation-controlled and nanostructured donor-acceptor hetero-junction blends integrating near-infrared excitonic semiconductors of small-molecules and J-aggregating molecules, which can be utilize to capture 650-1200 nm wavelength infrared light. Routes to tailoring the crystalline ordering, orientation, and microstructure of neat layer and blends will be established to realize the connection between morphology and the photo-physical response to maximize the exciton harvesting. To guide experiments, photo-carrier generation and photoconduction using multi-dimension morphological, optical-field, and electrical device simulations will be modeled and incorporated into a framework for evaluating the efficiency, transparency, and color rendering to assure full optimization for window integration. Broader impacts:Transparent PVs have potential to impact the US energy production and building energy utilization by reducing the energy cost for PV deployment, reducing cooling demand, and imparting a net-negative carbon footprint. To complement the research work, the PI will establish a coordinated outreach and educational effort by (1) organizing workshops, (2) working with a local-area museum, (3) advising student-run initiative to retrofit buildings with renewable energy solutions, and (4) supporting students from under-represented groups.

PI：伦特，理查兹提议编号：1254662机构：密歇根州立大学标题：Career：集成在高效透明光伏中的可见透明小带隙激子半导体的光学和纳米结构控制集成在建筑本身中的太阳能电池是一种诱人的能源途径，可以利用大面积的太阳能，同时实现建筑的高能效。然而，由于成本和建筑方面的障碍，这一努力受到了在建筑环境中安装传统光伏(PV)电池的需要的阻碍。开发重量轻、柔软、透明的太阳能电池可以解决这一问题。该项目将进行研究，将导致透明光伏的发展。具体地说，这个项目将利用小带隙分子和有机半导体的激子特性来产生选择性的近红外收割。仅靠红外光子发电的透明光伏体系结构有可能在理论和实践中分别展示35%和21%的效率，而光谱的可见部分完全不受影响。智能优势：在这个项目中，透明太阳能电池的基础将是晶体取向可控的纳米结构施主-受主异质结混合物，它集成了小分子和J聚集分子的近红外激子半导体，可以用来捕获650-1200 nm波长的红外光。将建立调整整整层和共混物的结晶有序性、取向和微观结构的路线，以实现形态和光物理响应之间的联系，从而最大限度地获得激子。为了指导实验，将使用多维形态、光场和电器件模拟对光载体产生和光导进行建模，并将其合并到用于评估效率、透明度和显色性的框架中，以确保窗口集成的完全优化。更广泛的影响：透明的PV可能会降低光伏部署的能源成本，减少冷却需求，并带来净负碳足迹，从而潜在地影响美国的能源生产和建筑能源利用。为了补充研究工作，国际和平协会将通过(1)组织讲习班，(2)与当地博物馆合作，(3)为学生开办的用可再生能源解决方案翻新建筑物的倡议提供建议，以及(4)支持代表不足的群体的学生，从而建立协调的外联和教育努力。