Effects of Proton Beam and Solar Light Irradiation in Multiple-cation Halide Perovskites

质子束和太阳光照射对多阳离子卤化物钙钛矿的影响

• 批准号: 505936618
• 负责人: Professor Dr. Sanjay Mathur
• 金额: --
• 依托单位: Institut für Anorganische Chemie
• 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/505936618?language=en
• 关键词: Effects; Proton; Beam; Solar; Light

Halide perovskites including hybrid inorganic organic perovskites (HIOPs) have revolutionized the field of optoelectronics due to their promising device-related properties that include high absorption coefficients, high charge-carrier mobilities and low exciton binding energy values relevant for photovoltaics, light-emitting diodes, and photodetectors. While the device applications of perovskite thin films have been extensively investigated in the recent years, unambiguous understanding on the influence of external stimulants such as temperature, humidity and high-energy radiation remains elusive. Since both intrinsic and extrinsic effects can influence the photo-physical properties of perovskite materials, detailed understanding of external stimuli such as radiation effects is crucial for further optimization of solar cell devices. This German-French consortium will investigate fundamental aspects of improving the stability of perovskite materials by increasing their defect-tolerance through proton (H+) irradiation. The scientific objectives of the H+BOOST project will target compositionally engineered multiple-cation HOIPs that will be hardened towards atomic level defects by high-energy proton irradiation treatments. The central goal is to demonstrate whether a post-synthesis processing of perovskite solar cells with ~1 MeV proton irradiation can be applied to different HOIPs PV device architectures and adapted to other HOIPs composition for enhancing their environmental and operational stability. Moreover, the compositionally engineered quadruple-cation lead perovskites will be systematically investigated towards the role of intrinsic point defects induced via ~1 MeV proton irradiation to clarify defect-assisted processes relevant to PV stability and durability during ageing. This project combines the complimentary expertise of the German research group in chemical engineering of defined HIOP single crystals and thin films as well as their integration in solar cell devices with the expertise of the French partners in proton irradiation and spatially resolved microscopy and spectroscopy to correlate defect formation with solar cell performance.

卤化物钙钛矿，包括杂化无机有机钙钛矿（HIOP），由于其具有前景的器件相关特性，包括与光伏、发光二极管和光电探测器相关的高吸收系数、高载流子迁移率和低激子结合能值，已经彻底改变了光电子领域。尽管近年来钙钛矿薄膜的器件应用得到了广泛的研究，但对温度、湿度和高能辐射等外部刺激的影响的明确理解仍然难以捉摸。由于内在效应和外在效应都会影响钙钛矿材料的光物理性质，因此详细了解辐射效应等外部刺激对于进一步优化太阳能电池器件至关重要。这个德法联盟将研究通过质子 (H+) 辐照提高钙钛矿材料的缺陷容限来提高钙钛矿材料稳定性的基本方面。 H+BOOST 项目的科学目标将针对成分设计的多阳离子 HOIP，这些 HOIP 将通过高能质子辐照处理针对原子级缺陷进行硬化。中心目标是证明采用 ~1 MeV 质子辐照的钙钛矿太阳能电池的后合成处理是否可以应用于不同的 HOIPs PV 器件架构，并适应其他 HOIPs 成分，以增强其环境和运行稳定性。此外，还将系统地研究成分工程化的四重阳离子铅钙钛矿，以研究通过~1 MeV质子辐照诱导的本征点缺陷的作用，以阐明与老化过程中光伏稳定性和耐久性相关的缺陷辅助过程。该项目结合了德国研究小组在定义的 HIOP 单晶和薄膜化学工程及其在太阳能电池器件中的集成方面的互补专业知识，与法国合作伙伴在质子辐照和空间分辨显微镜和光谱学方面的专业知识，以将缺陷形成与太阳能电池性能相关联。