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首页> 外文期刊>Energy & environmental science >Overlapping fasten packing enables efficient dual-donor ternary organic solar cells with super stretchability
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Overlapping fasten packing enables efficient dual-donor ternary organic solar cells with super stretchability

机译：重叠的固定包装使高效的双供体三元有机太阳能电池具有超级拉伸性

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摘要

The flexibility and stability of organic solar cells (OSCs) are becoming hotspot research due to their practical applications. Molecular arrangement and network morphology of the active layer are important factors affecting the flexibility and stability of OSCs. Here, two polymer donors (PBB1-Cl and PBB2-Cl) with different side chains were investigated as the third component to finely regulate morphology and molecular accumulation of the active layer to improve the performance of OSCs. Both third components show complementary absorption spectra and good compatibility. The good planarity of PBB1-Cl and PBB2-Cl significantly increases intermolecular overlap to promote the charge transfer in the active layer. In addition, the steric hindrance of the one-dimensional side chain of PBB1-Cl enhanced the intermolecular close packing and entanglement of the active layer. As a result, the tensile endurance of PM6:PBB1-Cl:Y6-BO-4Cl ternary blend film reached 4.6 times (26.86%) of the PM6:Y6-BO-4Cl binary blend film. Furthermore, the power conversion efficiency (PCE) increased from 15.83% for PM6:Y6-BO-4Cl based binary OSCs to 17.36% for PBB1-Cl based rigid ternary OSCs, and the flexible OSCs increased from 13.44% to 14.96%, respectively. 17.36% efficiency of PBB1-Cl based ternary OSCs is the highest value in OSCs with elongation at the break of active layer exceeding 25% so far. Further, the PCEs of PBB1-Cl-based flexible ternary OSCs still remain above 74% within 500 cycles of bending with a diameter of 10 mm or annealing at 100 degrees C for 24 hours, which is mainly attributed to the smaller surface energy difference between PBB1-Cl-based ternary blend film and transport layers, higher glass transition temperature and larger elongation at break of the active layer. All results suggest that enhancing intermolecular overlapping fasten packing in the active layer has great potential in improving the photovoltaic performance, mechanical and thermal stability of OSCs.
机译：由于其实际应用，有机太阳能电池（OSC）的灵活性和稳定性正在成为热点研究。积极层的分子布置和网络形态是影响OSC的灵活性和稳定性的重要因素。这里，研究了两种具有不同侧链的聚合物供体（PBB1-C1和PBB2-CL）作为第三组分，以精细调节活性层的形态和分子积聚以改善OSC的性能。两个第三组分都显示了互补的吸收光谱和良好的兼容性。 PBB1-CL和PBB2-CL的良好平面性显着增加分子间重叠，以促进活性层中的电荷转移。另外，PBB1-CL的一维侧链的空间阻碍增强了活性层的分子间关闭填充和缠结。结果，PM6：PBB1-CL：Y6-BO-4CL三元共混膜的拉伸耐久性达到4.6倍（26.86％）PM6：Y6-BO-4CL二元共混膜。此外，功率转化效率（PCE）从PM6：Y6-BO-4Cl的二元OSC增加到PBB1-Cl的刚性三元OSC的17.36％，柔性OSC分别从13.44％增加到14.96％。基于PBB1-Cl的三元OSC的效率为17.36％是OSC中的最高值，迄今为止突破的活动层断裂伸长率超过25％。此外，PBB1-CL的柔性三元OSC的PCE仍然在500℃的弯曲中仍然高于74％，其直径为10mm或以100摄氏度退火24小时，这主要归因于较小的表面能差之间基于PBB1-CL的三元共混膜和运输层，较高的玻璃化转变温度和较大的活性层断裂伸长率。所有结果表明，增强主体层中的分子间重叠填料在改善OSC的光伏性能，机械和热稳定性方面具有很大的潜力。

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  • 来源
    《Energy & environmental science》 |2021年第11期|5968-5978|共11页
  • 作者

    Wang Jianxiao; Han Chenyu; Bi Fuzhen; Huang Da; Wu Yuanwei; Li Yonghai; Wen Shuguang; Han Liangliang; Yang Chunming; Bao Xichang; Chu Junhao;

  • 作者单位

    Chinese Acad Sci Qingdao Inst Bioenergy & Bioproc Technol CAS Key Lab Biobased Mat Qingdao 266101 Peoples R China|Univ Chinese Acad Sci Beijing 100049 Peoples R China;

    Chinese Acad Sci Qingdao Inst Bioenergy & Bioproc Technol CAS Key Lab Biobased Mat Qingdao 266101 Peoples R China;

    Chinese Acad Sci Qingdao Inst Bioenergy & Bioproc Technol CAS Key Lab Biobased Mat Qingdao 266101 Peoples R China;

    Chinese Acad Sci Shanghai Synchrot Radiat Facil Shanghai Adv Re Shanghai 201204 Peoples R China;

    Chinese Acad Sci Qingdao Inst Bioenergy & Bioproc Technol CAS Key Lab Biobased Mat Qingdao 266101 Peoples R China;

    Chinese Acad Sci Qingdao Inst Bioenergy & Bioproc Technol CAS Key Lab Biobased Mat Qingdao 266101 Peoples R China;

    Chinese Acad Sci Qingdao Inst Bioenergy & Bioproc Technol CAS Key Lab Biobased Mat Qingdao 266101 Peoples R China|Shandong Energy Inst Funct Lab Solar Energy Qingdao 266101 Peoples R China;

    Chinese Acad Sci Qingdao Inst Bioenergy & Bioproc Technol CAS Key Lab Biobased Mat Qingdao 266101 Peoples R China;

    Chinese Acad Sci Shanghai Synchrot Radiat Facil Shanghai Adv Re Shanghai 201204 Peoples R China;

    Chinese Acad Sci Qingdao Inst Bioenergy & Bioproc Technol CAS Key Lab Biobased Mat Qingdao 266101 Peoples R China|Univ Chinese Acad Sci Beijing 100049 Peoples R China|Shandong Energy Inst Funct Lab Solar Energy Qingdao 266101 Peoples R China;

    Chinese Acad Sci Qingdao Inst Bioenergy & Bioproc Technol CAS Key Lab Biobased Mat Qingdao 266101 Peoples R China|Univ Chinese Acad Sci Beijing 100049 Peoples R China;

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