国家纳米科学中心周二军团队实现了3,5-二溴苯甲醚作为多功能固体添加剂提高有机太阳能电池的性能。相关论文于2025年6月18日发表在《中国化学》杂志上。

用于调节有机光伏系统中分子聚集和结晶度的固体添加剂的战略设计对于提高器件效率和稳定性至关重要。研究组介绍了3,5-二溴茴香醚（DBA），这是一种挥发性固体添加剂，可协同整合卤素和烷氧基官能团，以优化PM6:Y6活性层。DBA同时与PM6和Y6相互作用，促进表面分子定向和纤维网络形成。 

因此，DBA处理的器件实现了18.34%的功率转换效率（PCE），短路电流密度（J_SC）为28.24 mA·cm^-2，填充系数（FF）为78.6%，超过了控制器件（PCE=17.13%）。值得注意的是，DBA添加剂表现出卓越的稳定性，并在多种材料体系中具有广泛的适用性。该研究为设计多功能固体添加剂建立了一个通用框架，为可扩展、高效的有机太阳能电池（OSC）铺平了道路。

附：英文原文

Title: 3,5-Dibromoanisole as Multifunctional Solid Additive to Enhance the Performance of Organic Solar Cells

Author: Xingchen Zhang, Qing Guo, Zongtao Wang, Jinsheng Song, Zhi Zheng, Jianlei Han, Erjun Zhou

Issue&Volume: 2025-06-18

Abstract: Strategic design of solid additives for regulating molecular aggregation and crystallinity in organic photovoltaic systems is crucial for enhancing device efficiency and stability. Herein, we introduce 3,5-dibromoanisole (DBA), a volatile solid additive synergistically integrating halogen and alkoxy functionalities, to optimize the PM6:Y6 active layer. DBA simultaneously interacts with both PM6 and Y6, promoting face-on molecular orientation and fibrillar network formation. Consequently, DBA-treated devices achieve a power conversion efficiency (PCE) of 18.34%, with a short-circuit current density (JSC) of 28.24 mA·cm–2 and a fill factor (FF) of 78.6%, surpassing the control device (PCE = 17.13%). Notably, the DBA additive exhibits exceptional stability and demonstrates broad applicability across multiple material systems. This study establishes a universal framework for designing multifunctional solid additives, paving the way for scalable, high-efficiency organic solar cells (OSCs).

DOI: 10.1002/cjoc.70127

Source: https://onlinelibrary.wiley.com/doi/10.1002/cjoc.70127