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

PI: Lunt， richard提案编号：1254662机构：密歇根州立大学标题：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集成在高效透明光伏太阳能电池集成在建筑本身是一个诱人的能源途径，利用大面积的太阳能，同时实现高建筑能源效率。然而，由于成本和建筑障碍，需要在建筑环境中安装传统的光伏（PV）电池，这一努力受到阻碍。开发重量轻、柔性透明的太阳能电池可以解决这个问题。该项目将进行研究，从而导致透明光伏的发展。具体来说，这个项目将利用小带隙分子和有机半导体的激子特性，导致“振荡器聚束”，以产生选择性的近红外收获。仅由红外光子产生电力的透明光伏架构有可能分别表现出35%和21%的理论和实际效率，同时完全不影响光谱的可见部分。知识优势：在本项目中，透明太阳能电池的基础将是晶体取向控制和纳米结构的供体-受体异质结共混物，集成近红外小分子激子半导体和j聚集分子，可用于捕获650- 1200nm波长的红外光。为了实现形态和光物理响应之间的联系，以最大限度地收获激子，将建立定制整齐层和共混层的晶体有序、取向和微观结构的途径。为了指导实验，利用多维形态、光场和电子器件模拟进行光载流子生成和光传导建模，并将其纳入评估效率、透明度和显色性的框架中，以确保对窗口集成进行充分优化。更广泛的影响：透明光伏有潜力通过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，影响美国的能源生产和建筑能源利用。为了补充研究工作，PI将通过以下方式建立协调的外展和教育工作：(1)组织研讨会，(2)与当地博物馆合作，(3)建议学生发起用可再生能源解决方案改造建筑物的倡议，以及(4)支持来自代表性不足群体的学生。

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.