Short-Axis Methyl Substitution Approach on Indacenodithiophene: A New Multi-Fused Ladder-Type Arene for Organic Solar Cells
Short-Axis Methyl Substitution Approach on Indacenodithiophene: A New Multi-Fused Ladder-Type Arene for Organic Solar Cells
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茚并二噻吩的短轴甲基取代方法：一种用于有机太阳能电池的新型多稠合梯型芳烃
DOI：
10.3389/fchem.2019.00372
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发表时间：
2019-06
影响因子：
5.5
通讯作者：
Jiang Zuo-Quan
中科院分区：
文献类型：
--
作者：
Li Yun;Wang Menghan;Wu Fupeng;Gao Xuyu;Huettner Sven;Tao Youtian;Jiang Zuo-Quan
Indacenodithihene(IDT)是一种很有前途的有机半导体材料。在本工作中，通过在IDT的短轴上引入甲基取代，设计合成了一种新的五环梯形芳烃IDMe。设计合成了两种非富勒烯电子受体(IDIC和ID-MEIC)，并对其进行了进一步的研究。与IDIC相比，IDT短轴上甲基取代的ID-MEIC具有更小的禁带宽度、更强的消光系数和更好的结晶度。此外，PBDB-T：ID-MEIC共混膜显示出更高效的激子产生和解离以及更平衡的电荷输运迁移率。因此，基于PbDB-T：ID-MEIC的聚合物太阳能电池可以获得更好的光伏性能，与PbDB-T：IdIC的4.94%和9.10 mA cm−2相比，光伏电池的光电转换效率达到6.46%，Jsc提高到14.13 mA cm−2。这些结果表明，在多稠梯状芳烃(如IDT)上进行短轴取代是改变有机半导体光电性能的有效途径。
Indacenodithiophene (IDT) is a promising building block for designing organic semiconductors. In this work, a new pentacyclic ladder-type arene IDMe was designed and synthesized by introducing methyl substitution on the short-axis of IDT. Two non-fullerene electron acceptors (IDIC and ID-MeIC) without and with methyl substitution were designed and synthesized for further study. Compared with IDIC, ID-MeIC with methyl substitution on the short-axis of IDT shows smaller bandgap, stronger extinction coefficient, and better crystallinity. Besides, PBDB-T: ID-MeIC blend film shows more efficient exciton generation and dissociation and more balanced charge transport mobility. Therefore, polymer solar cells based on PBDB-T: ID-MeIC can achieve better photovoltaic performance with a PCE of 6.46% and substantial increase in JSC to 14.13 mA cm−2 compared to 4.94% and 9.10 mA cm−2 of PBDB-T: IDIC. These results suggest that short-axis substitution on multi-fused ladder-type arenes, such as IDT is an effective way to change the optical and electronic properties of the organic semiconductors for high-performance OPVs.
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影响因子：
4.5
作者：
Cenqi Yan;Yang Wu;Jiayu Wang;Rong Li;Pei Cheng;Huitao Bai;Zhiqiang Zhan;Wei Ma;X. Zhan
通讯作者：
Cenqi Yan;Yang Wu;Jiayu Wang;Rong Li;Pei Cheng;Huitao Bai;Zhiqiang Zhan;Wei Ma;X. Zhan
影响因子：
3.2
作者：
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通讯作者：
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电子受体挑战富勒烯高效聚合物太阳能电池
影响因子：
29.4
作者：
Lin, Yuze;Wang, Jiayu;Zhan, Xiaowei
通讯作者：
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影响因子：
4
作者：
Halls, JJM;Pichler, K;Holmes, AB
通讯作者：
Holmes, AB
影响因子：
9.6
作者：
Jia, Boyu;Wu, Yao;Zhan, Xiaowei
通讯作者：
Zhan, Xiaowei