Improved Power Conversion Efficiency in Bulk Heterojunction Organic Solar Cells with Radial Electron Contacts
Improved Power Conversion Efficiency in Bulk Heterojunction Organic Solar Cells with Radial Electron Contacts
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DOI：
10.1021/nn2031963
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发表时间：
2011-10-01
期刊：
影响因子：
17.1
通讯作者：
Black, Charles T.
中科院分区：
文献类型：
--
作者：
Allen, Jonathan E.;Black, Charles T.
我们引入了穿透混合有机半导体有源层的径向电触点，以缩短poly(3-hexylthiophene)：(6，6]-phenyl-C-61-butyric酸甲酯体相异质结太阳能电池中的电子收集路径，同时将混合材料限制在纳米级体积内。与平面接触体异质结的性能相比，这种结构的有源材料性能提高了50%以上，这与加速电子提取一致。尽管径向接触太阳能电池的体积不到吸光半导体材料的一半，但它在控制具有平面接触的体相异质结器件方面实现了类似的总体光伏电能转换效率。
We incorporate radial electrical contacts penetrating a blended organic semiconductor active layer to shorten the electron collection pathway in poly(3-hexylthiophene):(6,6]-phenyl-C-61-butyric acid methyl ester bulk heterojunction solar cells and simultaneously confine the blend material within nanometer-scale volumes. This architecture Improves the active material performance by more than 50% compared to its performance in a bulk heterojunction with planar contacts, consistent with accelerated electron extraction. The radial contact solar cell achieves similar overall photovoltaic power conversion efficiency to control bulk heterojunction devices with planar contacts, despite containing less than half the volume of light-absorbing semiconductor material.