A comparison of para , meta , and ortho -carborane centred non-fullerene acceptors for organic solar cells
A comparison of para , meta , and ortho -carborane centred non-fullerene acceptors for organic solar cells
复制标题
有机太阳能电池对位、间位和邻位碳硼烷中心非富勒烯受体的比较
DOI：
10.1039/d2tc05018h
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发表时间：
2023
影响因子：
6.4
通讯作者：
Aniés F
中科院分区：
文献类型：
--
作者：
Aniés F
我们报告的第一个例子的碳硼烷含非富勒烯受体（NFA），以及它们在有机光伏（OPV）器件中的应用。报道了采用以中心吸电子碳硼烷单元（A′）为中心的A-D-A′-D-A型设计，使用帕拉、Meta或邻位碳硼烷异构体的NFA。我们表明，异构体的性质对器件性能有重大影响，尽管在光电和形态学性质的微小差异，与使用邻碳硼烷导致最高的器件效率。我们进一步表明，端基取代是一种有效的策略，以调节能量水平，提高器件性能的NFA。
We report the first examples of carborane-containing non-fullerene acceptors (NFAs), and their use in organic photovoltaic (OPV) devices. NFAs employing an A–D–A′–D–A type design centred around a central electron withdrawing carborane unit (A′), using either para, meta, or ortho-carborane isomers are reported. We demonstrate that the nature of the isomer has a major impact on device performance, despite minor differences in optoelectronic and morphological properties, with the use of ortho-carborane resulting in the highest device efficiencies. We further show that end-group fluorination is an efficient strategy to modulate energy levels and improve device performance of such NFAs.