通过基于硼氮的聚合物给体抑制非辐射复合的高效三元有机太阳能电池。
Efficient ternary organic solar cells with suppressed nonradiative recombination via B‒N based polymer donor.
作者信息
Pang Shuting, Deng Wanyuan, Pan Langheng, Liu Xinyuan, Shen Zhibang, Li Hongxiang, Cheng Pei, Zhu Jiayuan, Yan Wensheng, Duan Chunhui
机构信息
Institute of Carbon Neutrality and New Energy, School of Electronics and Information Engineering, Hangzhou Dianzi University, Hangzhou 310018, China.
Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China.
出版信息
iScience. 2024 Dec 24;28(1):111682. doi: 10.1016/j.isci.2024.111682. eCollection 2025 Jan 17.
Organic solar cells (OSCs) have developed rapidly in recent years. However, the energy loss ( ) remains a major obstacle to further improving the photovoltaic performance. To address this issue, a ternary strategy has been employed to precisely tune the and boost the efficiency of OSCs. The B‒N-based polymer donor has been proved to process high (T) and small Δ characters, which can inhibition of CT state recombination. Herin, B‒N-based polymer donor PBNT-BDD was incorporated into the state-of-the-art PM6:L8-BO binary to construct ternary OSCs. Together with the optimal morphology, the ternary device affords an impressive power conversion efficiency of 18.95% with an improved open-circuit voltage ( ), short-circuit density ( ), and reduced in comparison to the binary ones, which is the highest PCE for B‒N materials-based ternary device. This work broadens the selection of guest materials toward realizing the high performance of OSCs.
近年来，有机太阳能电池（OSCs）发展迅速。然而，能量损失（ ）仍然是进一步提高光伏性能的主要障碍。为了解决这个问题，人们采用了三元策略来精确调节 并提高OSCs的效率。基于B‒N的聚合物给体已被证明具有高（T）和小Δ 特性，这可以抑制电荷转移（CT）态复合。在此，将基于B‒N的聚合物给体PBNT-BDD引入到先进的PM6:L8-BO二元体系中，构建三元OSCs。与最佳形貌相结合，与二元器件相比，三元器件的功率转换效率高达18.95%，开路电压（ ）提高，短路密度（ ）提高， 降低，这是基于B‒N材料的三元器件的最高光电转换效率（PCE）。这项工作拓宽了客体材料的选择范围，有助于实现高性能的OSCs。
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