Gold nanoparticle-decorated graphene oxides for plasmonic-enhanced polymer photovoltaic devices
Gold nanoparticle-decorated graphene oxides for plasmonic-enhanced polymer photovoltaic devices
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DOI：
10.1039/c3nr05077g
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发表时间：
2014-01-01
期刊：
影响因子：
6.7
通讯作者：
Hsu, Chain-Shu
中科院分区：
文献类型：
--
作者：
Chuang, Ming-Kai;Lin, Shih-Wei;Hsu, Chain-Shu
在这项工作中，金纳米颗粒/氧化石墨烯（AuNP/GO）纳米复合材料的合成和用作阳极缓冲层的有机光伏器件（OPV）。硫醇封端的聚乙二醇作为封端剂的应用防止了AuNP在GO表面上的聚集，并进一步提高了这些纳米材料在溶液中的溶解度和稳定性。当AuNP/GO纳米材料作为缓冲层时，它们在OPV中引入了局部表面等离子体共振（LSPR），导致光电流和OPV效率的显著增强。我们把器件性能提高的主要原因归结为LSPR引起的局部场增强。我们预计，这项研究可能为在纳米尺度上构建等离子体增强层开辟新的途径，以提高太阳能电池的性能。
In this work, gold nanoparticle/graphene oxide (AuNP/GO) nanocomposites are synthesized and used as anodic buffer layers in organic photovoltaic devices (OPVs). The application of thiol-terminated polyethylene glycol as a capping agent prevents the aggregation of AuNPs on the GO surface and further improves the solubility and stability of these nanomaterials in solutions. When AuNP/GO nanomaterials served as the buffer layers, they introduced localized surface plasmon resonance (LSPR) in the OPVs, leading to noticeable enhancements in the photocurrent and the efficiencies of the OPVs. We attribute the primary origin of the improvement in device performance to local field enhancement induced by the LSPR. We anticipate that this study might open up new avenues for constructing plasmon-enhancing layers on the nanoscale to improve the performance of solar cells.