Solution-processed boron subphthalocyanine derivatives as acceptors for organic bulk-heterojunction solar cells
Solution-processed boron subphthalocyanine derivatives as acceptors for organic bulk-heterojunction solar cells
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DOI：
10.1039/c5ta00715a
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发表时间：
2015-01-01
影响因子：
11.9
通讯作者：
Samuel, Ifor D. W.
中科院分区：
文献类型：
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作者：
Ebenhoch, Bernd;Prasetya, Nor B. A.;Samuel, Ifor D. W.
我们报告了以亚酞菁 (SubPc) 单元作为受体组分和传统聚合物供体材料（如 MEH-PPV、P3HT 和 PTB7）制造溶液加工的本体异质结器件。 SubPc衍生物的高溶解度有利于形成高效的供体/受体网络，并提供MEH-PPV 0.4％、P3HT 1.1％和PTB7 3.5％的功率转换效率。从外部量子效率谱中可以看出受体收集光子的明显贡献。对电流-电压特性和光致发光猝灭的分析揭示了陷阱辅助和成对复合是一种损失机制。我们的结果表明，可溶液加工的 SubPcs 是聚合物太阳能电池中富勒烯的一种有前景的替代品。
We report the fabrication of solution-processed bulk heterojunction devices from subphthalocyanine (SubPc) units as the acceptor component and conventional polymeric donor materials such as MEH-PPV, P3HT and PTB7. The high solubility of the SubPc derivatives facilitated the formation of efficient donor/acceptor networks and provided power conversion efficiencies of 0.4% with MEH-PPV, 1.1% with P3HT and 3.5% with PTB7. A clear contribution of photon harvesting by the acceptor was identified from the external quantum efficiency spectra. Analysis of the current-voltage characteristics and photoluminescence quenching revealed trap-assisted and geminate recombination as a loss mechanism. Our results show that solution-processable SubPcs are a promising alternative to fullerenes for polymer solar cells.