Building a hybrid nanocomposite assembly of gold nanowires and thienyl-derivative fullerenes to enhance electron transfer in photovoltaics
Building a hybrid nanocomposite assembly of gold nanowires and thienyl-derivative fullerenes to enhance electron transfer in photovoltaics
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构建金纳米线和噻吩基衍生物富勒烯的混合纳米复合材料组件，以增强光伏发电中的电子转移
DOI：
10.1039/c3ta01416a
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发表时间：
2013
影响因子：
--
通讯作者：
W. Kim
中科院分区：
文献类型：
--
作者：
Yong Seok Kim;Byung;Jeong Won Kim;Y. Suh;Dong‐Yu Kim;W. Kim
我们报道了一种新型的纳米复合材料组装体的制备和表征，该组装体包括金属金纳米线（Au NW）和噻吩基-C61-丁酸甲酯（ThCBM），该组装体通过将ThCBM基团通过涉及硫官能团的配位键吸附到Au NW的Au（111）表面上而制备。的ThCBM吸附的Au NW纳米复合材料显示出明显的位移的等离子体吸收带和结合能的金相对于纯金NW。使用ThCBM吸附的Au NW纳米复合材料的体异质结太阳能电池显示出3.12%的良好功率转换效率（PCE），以及短路电流密度和填充因子，显着优于使用不含Au NW的ThCBM制备的参考电池（PCE为2.67%）。使用吸附ThCBM的Au NW纳米复合材料制备的仅电子器件中的电子迁移率显著高于（35%或更多）用纯ThCBM制备的器件中的电子迁移率。总之，本文提出的混杂复合材料，即，ThCBM吸附的Au NW纳米复合材料，提供了一种有前途的方法，通过改善通过金属纳米线的电子转移，以及通过增强组装的富勒烯之间的有序性沿着的金纳米线的纵向轴，以提高本体异质结光伏电池的性能。
We report the preparation and characterization of a novel nanocomposite assembly comprising metallic gold nanowires (Au NWs) and thienyl-C61-butyric acid methyl ester (ThCBM) fabricated by adsorbing ThCBM groups, via coordinate bonds involving sulfur functionalities, onto the Au(111) surfaces of Au NWs. The ThCBM-adsorbed Au NW nanocomposites displayed clear shifts in the plasmonic absorption band and in the binding energy of the gold relative to the pure gold NWs. A bulk heterojunction solar cell using the ThCBM-adsorbed Au NW nanocomposites displayed a good power conversion efficiency (PCE) of 3.12%, and a short circuit current density and fill factor that were significantly better than those of a reference cell prepared using ThCBM without Au NWs (with a PCE of 2.67%). The electron mobility in an electron-only device prepared using the ThCBM-adsorbed Au NW nanocomposites was significantly higher (by 35% or more) than the electron mobility in a device prepared with pure ThCBM. In conclusion, the hybrid composites proposed here, i.e., ThCBM-adsorbed Au NW nanocomposites, provide a promising approach to improving the performance of bulk heterojunction photovoltaic cells via improved electron transfer through the metallic nanowires as well as by enhanced ordering among the fullerenes assembled along the longitudinal axes of the gold nanowires.