Pangdam Apichat, Nootchanat Supeera, Ishikawa Ryousuke, Shinbo Kazunari, Kato Keizo, Kaneko Futao, Thammacharoen Chuchaat, Ekgasit Sanong, Baba Akira
Graduate School of Science and Technology, Niigata University, 8050, Ikarashi 2-nocho, Nishi-ku, Niigata 950-2181, Japan.
Phys Chem Chem Phys. 2016 Jul 21;18(27):18500-6. doi: 10.1039/c6cp02373h. Epub 2016 Jun 24.
In this study, urchin-like gold nanoparticles (UL-AuNPs) are used in the fabrication of organic thin-film solar cells (OSCs). UL-AuNPs, which have gold nanothorns on their surface, enhance light accumulation by acting as light-trapping materials. This is due to the enhanced electric field and light scattering attributed to the nanothorns on the surface of the nanoparticles. UL-AuNPs were incorporated into a poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (
PSS) thin-film layer of organic thin-film solar cells (OSCs). UV-vis spectra, atomic force microscopy (AFM) images, current density versus voltage properties, and the impedance spectra of the fabricated devices were recorded at various concentrations of UL-AuNPs. We found that the efficiency of the OSCs with UL-AuNPs was not only higher than that of a reference cell without nanoparticles but also higher than that of OSCs with spherical AuNPs. Finite-difference time-domain (FDTD) simulation indicated that the electric field around the UL-AuNPs increased due to the presence of nanothorns.
在本研究中，海胆状金纳米颗粒（UL-AuNPs）被用于制造有机薄膜太阳能电池（OSCs）。表面带有金纳米刺的UL-AuNPs作为光捕获材料增强了光的积累。这是由于纳米颗粒表面的纳米刺增强了电场和光散射。UL-AuNPs被掺入有机薄膜太阳能电池（OSCs）的聚（3,4-乙撑二氧噻吩）：聚（苯乙烯磺酸盐）（PEDOT：PSS）薄膜层中。在不同浓度的UL-AuNPs下记录了所制备器件的紫外可见光谱、原子力显微镜（AFM）图像、电流密度与电压特性以及阻抗谱。我们发现，含有UL-AuNPs的OSCs的效率不仅高于不含纳米颗粒的参考电池，而且高于含有球形AuNPs的OSCs。时域有限差分（FDTD）模拟表明，由于纳米刺的存在，UL-AuNPs周围的电场增强。
