Organic Solar Cells for Outer Space with Improved Performance and Radiation Hardness by a High Throughput Artificial Intelligence Guided Approach

通过高通量人工智能引导方法提高性能和辐射硬度的外层空间有机太阳能电池

• 批准号: 464963576
• 负责人: Professor Dr. Christoph J. Brabec
• 金额: --
• 依托单位: Lehrstuhl für Materialien der Elektronik und Energietechnik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/464963576?language=en
• 关键词: Organic; Solar; Cells; Outer; Space

Communication technologies in space is a strongly expanding market. Satellites, typically in low earth orbits, are powered by photovoltaic panels whose critical figures of merit are weight and space consumption during transport, and radiation hardness in operation. Current technology relies on rigid Si modules, not exceeding a specific power of 1 W/g. In this project, we develop solar modules based on high performance organic photovoltaics. They will be flexible, reach a specific power above 20 W/g (> 5W/g for modules) and excellent radiation potentially enabling operational lifetimes up to 40 years in low earth orbits, bringing a decisive cost advantage in transportation.This goal is reached by a collaboration of expert groups in organic synthesis and high energy photophysics, photovoltaics technology, and closed cycle high throughput artificial intelligence guided optimization.We will deploy a large library of organic electron donor and acceptor materials with systematically varied chemical structure. We will study the detailed mechanisms of photodegradation under gamma radiation exposure of each material (radical formation, cross-linking, fragmentation and self-healing). Using state of the art machine learning techniques, namely kernel based nonlinear regression and interpretable neural networks, we will identify structural motifs causing photodegradation and others promoting self-healing. Based on this insight, we will synthesize optimized donor and acceptor materials with maximized radiation hardness that at the same time match requirements for high performance photovoltaics (low frontier orbital offset, low reorganization energy).Using these photoactive materials, we will build photovoltaic devices and estimate the operational lifetime under low earth orbit conditions (80% of initial power output). Furthermore, we will perform optimization of radiation-stable and light-transparent electrode coatings, charge-transport layers, adhesives and encapsulation that ensure stable operation of solar cells under the influence of ionizing radiation.Our consortium, composed of top performers in their respective fields, combines the full expertise needed to achieve the goals and counts on previous successful collaborations. The team of Pavel Troshin is renowned for design and synthesis of organic semiconductor materials and investigation of their degradation pathways caused by different stress factors. The group of Christoph Brabec is among the leaders in the field of high throughput device formulation and characterization in photovoltaics. The Solar Factory of the Future, directed by Christoph Brabec and managed by Hans Joachim Egelhaaf, currently holds the world record for efficiency in organic photovoltaic modules. This project will integrate their capacities in experimentation, technology and artificial intelligence, bringing their successful collaboration to a new level.

空间通信技术是一个强劲增长的市场。卫星，通常在低地球轨道，是由光伏电池板供电，其关键的品质因数是重量和运输过程中的空间消耗，以及运行中的辐射硬度。目前的技术依赖于刚性Si模块，不超过1 W/g的比功率。在这个项目中，我们开发基于高性能有机光致发光材料的太阳能组件。它们将是灵活的，达到20 W/g以上的比功率（模块> 5 W/g）和优异的辐射性能，使其在低地球轨道上的使用寿命可能长达40年，在运输方面具有决定性的成本优势。这一目标是通过有机合成和高能物理学、光化学技术、和封闭循环高通量人工智能引导优化。我们将部署一个大型的有机电子供体和受体材料库，具有系统多样的化学结构。我们将研究每种材料在伽马射线照射下光降解的详细机制（自由基形成，交联，碎片化和自我修复）。使用最先进的机器学习技术，即基于内核的非线性回归和可解释的神经网络，我们将识别导致光降解的结构基序和其他促进自我修复的结构基序。基于这一认识，我们将合成具有最大辐射硬度的优化施主和受主材料，同时满足高性能光伏器件的要求（低前沿轨道偏移，低重组能量）。使用这些光敏材料，我们将构建光伏器件，并估计低地球轨道条件下的运行寿命（初始功率输出的80%）。此外，为了确保太阳能电池在电离辐射影响下的稳定运行，我们还将对辐射稳定和透光的电极涂层、电荷传输层、粘合剂和封装进行优化。我们的联合体由各自领域的顶尖人才组成，结合了实现目标所需的全部专业知识，并依赖于以前的成功合作。Pavel Troshin的团队以设计和合成有机半导体材料以及研究不同应力因素引起的降解途径而闻名。Christoph Brabec团队是光化学领域高通量器件配方和表征领域的领导者之一。由Christoph Brabec执导、Hans Joachim Egelhaaf管理的未来太阳能工厂目前保持着有机光伏组件效率的世界纪录。该项目将整合他们在实验、技术和人工智能方面的能力，将他们的成功合作提升到一个新的水平。