Improving the efficiency of polymer solar cells by incorporating gold nanoparticles into all polymer layers
Improving the efficiency of polymer solar cells by incorporating gold nanoparticles into all polymer layers
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DOI：
10.1063/1.3650707
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发表时间：
2011-10
影响因子：
4
通讯作者：
Fengxian Xie;W. Choy;Charlie C. D. Wang;W. Sha;D. Fung
中科院分区：
文献类型：
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作者：
Fengxian Xie;W. Choy;Charlie C. D. Wang;W. Sha;D. Fung
我们证明，通过将金纳米颗粒（NPs）加入所有聚合物层，聚合物太阳能电池（PSCs）的效率提高了约22%。发现金纳米粒子在不同聚合物层中掺入时具有不同的改善器件性能的机制。聚（3,4 -乙烯二氧噻吩）：聚苯乙烯磺酸盐中的Au NPs主要有助于更好的空穴收集，而活性层中的Au NPs有助于增强光学吸收和更平衡的电荷输运。我们的理论结果表明，活性层的吸收增强归因于具有强近场分布的等离子体共振穿透吸收聚合物。这些发现可以应用于设计高效率的金属NPs - PSCs。
We demonstrate efficiency improvement in polymer solar cells (PSCs) by ∼22% through incorporating Au nanoparticles (NPs) into all polymer layers. Au NPs are found to have distinct mechanisms in improving device performance when incorporated in different polymer layers. Au NPs in poly‐(3,4‐ethylenedioxythiophene):poly(styrenesulfonate) mainly contribute to better hole collection while Au NPs in active layer contributes to the enhanced optical absorption and more balanced charge‐transport. Our theoretical result shows that the absorption enhancement at the active layer is attributed to plasmon resonances with strong near‐field distributions penetrated into absorption polymers. These findings can be applied to design high‐efficiency metallic NPs‐incorporated PSCs.