2015年以来,稠环电子类非富勒烯受体材料成为
有机太阳能电池的研究热点,基于此类材料的太阳能电池光电转换效率(PCE)也在不断实现突破。稠环电子受体通常具有A-D-A结构,其端基为强吸电子基团,核心为富电子稠环单元,通过合理的分子设计,对端基、稠环中心等进行结构优化,可获得更高性能的受体材料。
端基调控是受体合成中的最后一步,也是增强电荷传输和器件性能的关键因素。
二氰基茚酮(INCN)作为应用最广泛的端基之一,对其进行
π-拓环和氟化是常用的端基调控方法。有研究表明,端基π-拓环后的受体材料器件效率可达13%
[1],端基氟化后的受体材料器件效率可达15%
[2],端基π-拓环和氟化协同调控的受体材料器件效率可达16%
[3],均优于富勒烯体系(12%)。
图1 端基π-拓环后的受体材料性能研究[1]
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为助力有机太阳能电池领域发展,百灵威还可提供一系列氰基茚酮及其衍生物、含硒吩稠环化合物和ITIC、IT-4F、IDIC三种新型非富勒烯受体材料,纯度高,品种新颖,紧跟领域研究前沿。
氰基茚酮及其衍生物
1
品名:2-(6-Bromo-3-oxo-2,3-dihydro-1H-cyclopenta[b]naphthalen-1-ylidene)malononitrile, 98%, mixture of isomers
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2
品名:2-(6-Chloro-3-oxo-2,3-dihydro-1H-cyclopenta[b]naphthalen-1-ylidene)malononitrile, 98%, mixture of isomers
2-(6-氯-3-氧代-2,3-二氢-1H-环戊[b]萘-1-亚基)丙二腈
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3
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2-(6-氟-3-氧代-2,3-二氢-1H-环戊[b]萘-1-亚基)丙二腈
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4
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5
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6
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7
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8
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9
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10
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11
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12
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货号:974473
13
品名:2-(6-Methyl-3-oxo-2,3-dihydro-1H-inden-1-ylidene)malononitrile, 98%, mixture of isomers
2-(6-甲基-3-氧代-2,3-二氢-1H-茚-1-亚乙基)丙二腈
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14
品名:3-(Dicyanomethylidene)indan-1-one, 98%
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含硒吩稠环化合物
1
品名:Tributyl(6-undecylselenopheno[3,2-b]thiophen-2-yl)stannane, 90%
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2
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6-十一烷基硒吩[3,2-b]噻吩
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新型非富勒烯受体材料
品名:IT-4F, 98%
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品名:ITIC, 99%
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品名:IDIC, 98%
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参考文献
- Su N, Ma R, Li G, et al. High-efficiency all-polymer solar cells with poly-small-molecule acceptors having π-extended units with broad near-IR absorption[J]. ACS Energy Letters, 2021, 6(2): 728-738.
- Yu H, Luo S, Sun R, et al. A difluoro‐monobromo end group enables high‐performance polymer acceptor and efficient all‐polymer solar cells processable with green solvent under ambient condition[J]. Advanced Functional Materials, 2021, 31(25): 2100791.
- Li G, Zhang X, Jones L O, et al. Systematic merging of nonfullerene acceptor π-extension and tetrafluorination strategies affords polymer solar cells with> 16% efficiency[J]. Journal of the American Chemical Society, 2021, 143(16): 6123-6139.
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