High-Efficiency Fullerene Solar Cells Enabled by a Spontaneously Formed Mesostructured CuSCN-Nanowire Heterointerface.
High-Efficiency Fullerene Solar Cells Enabled by a Spontaneously Formed Mesostructured CuSCN-Nanowire Heterointerface.
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DOI：
10.1002/advs.201700980
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发表时间：
2018-04
期刊：
影响因子：
--
通讯作者：
Anthopoulos TD
中科院分区：
文献类型：
--
作者：
Sit WY;Eisner FD;Lin YH;Firdaus Y;Seitkhan A;Balawi AH;Laquai F;Burgess CH;McLachlan MA;Volonakis G;Giustino F;Anthopoulos TD
富勒烯及其衍生物广泛用作体异质结有机太阳能电池中的电子受体，因为它们与相关半导体聚合物结合了联合收割机高电子迁移率和良好的溶解性和可溶解性。然而，关于使用富勒烯作为唯一的光生和电荷载体材料的研究很少。本文报道了一种基于两种最常用的亚甲基富勒烯，即[6，6]-苯基-C61-丁酸甲酯（PC60 BM）和[6，6]-苯基-C71-丁酸甲酯（PC 70 BM）作为光吸收材料的新型溶液加工小分子太阳能电池。首先，它表明，这两个富勒烯衍生物具有良好的双极电荷传输平衡的空穴和电子迁移率。当将这两种衍生物旋涂在宽带隙p型半导体硫氰酸铜（I）（CuSCN）上时，获得了功率转换效率（PCE）为1.1%的电池。将CuSCN与PC 70 BM共混显示出进一步提高性能，从而产生开路电压为0.93 V且PCE为5.4%的电池。微观结构分析表明，这一成功的关键是CuSCN和PC 70 BM之间自发形成独特的介观结构p-n-like异质界面。这些发现为基于单一光活性材料的太阳能电池的令人兴奋的新类别铺平了道路。
Fullerenes and their derivatives are widely used as electron acceptors in bulk‐heterojunction organic solar cells as they combine high electron mobility with good solubility and miscibility with relevant semiconducting polymers. However, studies on the use of fullerenes as the sole photogeneration and charge‐carrier material are scarce. Here, a new type of solution‐processed small‐molecule solar cell based on the two most commonly used methanofullerenes, namely [6,6]‐phenyl‐C61‐butyric acid methyl ester (PC60BM) and [6,6]‐phenyl‐C71‐butyric acid methyl ester (PC70BM), as the light absorbing materials, is reported. First, it is shown that both fullerene derivatives exhibit excellent ambipolar charge transport with balanced hole and electron mobilities. When the two derivatives are spin‐coated over the wide bandgap p‐type semiconductor copper (I) thiocyanate (CuSCN), cells with power conversion efficiency (PCE) of ≈1%, are obtained. Blending the CuSCN with PC70BM is shown to increase the performance further yielding cells with an open‐circuit voltage of ≈0.93 V and a PCE of 5.4%. Microstructural analysis reveals that the key to this success is the spontaneous formation of a unique mesostructured p–n‐like heterointerface between CuSCN and PC70BM. The findings pave the way to an exciting new class of single photoactive material based solar cells.
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影响因子：
10.8
作者：
Guo, Changhe;Lin, Yen-Hao;Verduzco, Rafael
通讯作者：
Verduzco, Rafael
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作者：
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影响因子：
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作者：
Pattanasattayavong, Pichaya;Ndjawa, Guy Olivier Ngongang;Anthopoulos, Thomas D.
通讯作者：
Anthopoulos, Thomas D.
微调%20光活性%20和%20互连%20层%20for%20实现%20over%2013%%20效率%20in%20a%20无富勒烯%20Tandem%20有机%20太阳能%20Cell
影响因子：
15
作者：
Cui, Yong;Yao, Huifeng;Hou, Jianhui
通讯作者：
Hou, Jianhui