TPAHs as energy carriers for OPV devices

TPAH 作为 OPV 器件的能量载体

• 批准号: EP/X021564/1
• 负责人: Paul McGonigal
• 金额: $ 24.26万
• 依托单位: University of York
• 依托单位国家: 英国
• 项目类别: Fellowship
• 财政年份: 2023
• 资助国家: 英国
• 起止时间: 2023 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FX021564%2F1
• 关键词: TPAHs; energy; carriers; OPV; devices

The aims of this proposal are to design and synthesise new singlet fission chromophores, to incorporate them in organic photovoltaic (OPV) devices, and to investigate their performance for solar-to-electricity and electricity-to-solar energy conversions. Singlet fission is a highly sought-after phenomenon to enhance the efficiency of OPVs, but it has been restricted to a very narrow range of structural motifs -predominantly small molecules constituted solely of neutral fused six-membered rings-limiting the scope and flexibility of its development and applications. To date, there have not been any reports that have taken advantage of aromatic cations based on seven-membered rings (i.e., fused tropylium rings) in functional polycyclic aromatic hydrocarbons (PAHs). This is not only a fundamental area of organic materials that has not been explored, but it also provides a pathway to expand the structural diversity of available singlet fission materials. I will investigate tropylium-fused aromatic hydrocarbons (TPAHs) as a new class of singlet fission chromophore. The inclusion of fused tropylium ring systems has the potential to enhance the electronic, structural, and photophysical properties of PAH materials on account of their diffuse positive charge, redox activity, and negative Gaussian curvature. We aim to explore the potential of these materials as efficient energy carriers in OPV devices.

该提案的目的是设计和合成新的单线裂变发色团，将它们纳入有机光伏（OPV）设备中，并研究其在太阳能到电力和电力对极性转换的性能。 Singlet裂变是一种提高OPV效率的极富渴望的现象，但它仅限于非常狭窄的结构基序范围，这些基序范围仅由中性融合的六元环构成，从而限制了其开发和灵活性的范围和灵活性。迄今为止，尚无任何报道在功能性多环芳烃（PAHS）中基于七元环（即融合的tropylium环）利用芳香阳离子的报道。这不仅是尚未探索的有机材料的基本区域，而且还提供了扩大可用单裂材料的结构多样性的途径。我将研究融合式芳香芳烃（TPAHS）作为新的单线裂变发色团。融合型tropylium环系统的包含有可能增强PAH材料的电子，结构和光物理特性，因为它们的弥漫性阳性电荷，氧化还原活性和负高斯曲率。我们旨在探索这些材料作为OPV设备中有效的能源载体的潜力。