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CF3-Terminated Side Chain Enables Efficiencies Surpassing 18.2% and 16.1% in Small- and Large-Scale Manufacturing of Organic Solar Cells
ACS Energy Letters ( IF 22.0 ) Pub Date : 2022-11-22 , DOI: 10.1021/acsenergylett.2c02140 Yongjoon Cho, Zhe Sun, Kyung Min Lee, Guang Zeng, Seonghun Jeong, Sangjin Yang, Ji Eun Lee, Byongkyu Lee, So-Huei Kang, Yaowen Li, Yongfang Li, Sang Kyu Kwak, Changduk Yang
ACS Energy Letters ( IF 22.0 ) Pub Date : 2022-11-22 , DOI: 10.1021/acsenergylett.2c02140 Yongjoon Cho, Zhe Sun, Kyung Min Lee, Guang Zeng, Seonghun Jeong, Sangjin Yang, Ji Eun Lee, Byongkyu Lee, So-Huei Kang, Yaowen Li, Yongfang Li, Sang Kyu Kwak, Changduk Yang
Many studies have proven the significant roles of side chains far beyond being the solubilizing groups as well as the interesting merits of fluorination on π-backbones in the intrinsic properties and device performances of organic semiconductors. Considering the integration of the two features, we herein introduce a 4,4,4-trifluorobutyl (CF3-terminated) side chain into a 2H-1,2,3-benzotriazole-core-based acceptor–donor–acceptor–donor–acceptor-type nonfullerene acceptor (NFA) named YCF3 and demonstrate its effectiveness in optoelectronic, morphological, and photovoltaic properties. Comparative experimental and theoretical studies confirmed the unique features of YCF3 (e.g., red-shifted film absorption, better absorptivity, finely adjusted energies, and higher mobility) associated with its enhanced crystalline nature, compared with its analogous NFA with an n-butyl side chain named YCH3. The best power conversion efficiency (PCE) of 18.21% is achieved in a YCF3-based binary organic solar cell (OSC) together with good heat and light stability. Moreover, a YCF3-based OSC presents a remarkable PCE of 16.11% in an inverted-structure large-area device.
中文翻译:
CF3 封端的侧链使有机太阳能电池的小型和大型制造效率超过 18.2% 和 16.1%
许多研究已经证明侧链的重要作用远不止是增溶基团,以及 π 主链上的氟化在有机半导体的本征性质和器件性能方面的有趣优点。考虑到这两个特征的整合,我们在此将 4,4,4-三氟丁基(CF 3端)侧链引入 2 H基于-1,2,3-苯并三唑核的受体-供体-受体-供体-受体型非富勒烯受体 (NFA) 命名为 YCF3,并展示了其在光电、形态和光伏特性方面的有效性。对比实验和理论研究证实,与其具有正丁基侧链的类似 NFA 相比,YCF3 的独特特征(例如,红移膜吸收、更好的吸收率、精细调整的能量和更高的迁移率)与其增强的结晶性质相关命名为YCH3。基于 YCF3 的二元有机太阳能电池 (OSC) 实现了 18.21% 的最佳功率转换效率 (PCE),同时具有良好的热稳定性和光稳定性。此外,基于 YCF3 的 OSC 在倒置结构大面积器件中呈现出 16.11% 的显着 PCE。
更新日期:2022-11-22
中文翻译:
CF3 封端的侧链使有机太阳能电池的小型和大型制造效率超过 18.2% 和 16.1%
许多研究已经证明侧链的重要作用远不止是增溶基团,以及 π 主链上的氟化在有机半导体的本征性质和器件性能方面的有趣优点。考虑到这两个特征的整合,我们在此将 4,4,4-三氟丁基(CF 3端)侧链引入 2 H基于-1,2,3-苯并三唑核的受体-供体-受体-供体-受体型非富勒烯受体 (NFA) 命名为 YCF3,并展示了其在光电、形态和光伏特性方面的有效性。对比实验和理论研究证实,与其具有正丁基侧链的类似 NFA 相比,YCF3 的独特特征(例如,红移膜吸收、更好的吸收率、精细调整的能量和更高的迁移率)与其增强的结晶性质相关命名为YCH3。基于 YCF3 的二元有机太阳能电池 (OSC) 实现了 18.21% 的最佳功率转换效率 (PCE),同时具有良好的热稳定性和光稳定性。此外,基于 YCF3 的 OSC 在倒置结构大面积器件中呈现出 16.11% 的显着 PCE。