Mayumi Shuichi, Ikeguchi Yutaka, Nakane Daisuke, Ishikawa Yasuaki, Uraoka Yukiharu, Ikeguchi Mamoru
PGS Home Co., Ltd., 2-1-8, Higashiimazato, Higashinariku, Osaka, 537-0011, Japan.
Graduate School of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama-cho, Ikoma, Nara, 630-0192, Japan.
Nanoscale Res Lett. 2017 Aug 29;12(1):513. doi: 10.1186/s11671-017-2285-4.
Photoanodes comprising Au nanoparticles (GNPs) and thin TiO layers with a stacked structure were fabricated by repeating the application of TiO paste and GNP solutions on conductive glass to vary the distribution of GNPs in the TiO layer. The plasmon-enhanced characteristics of dye-sensitized solar cells (DSSCs) with such photoanodes were investigated. Both the absorption of the TiO layer and the performance of the DSSC are found to be most increased by plasmonic enhancement when GNPs are concentrated near the position in the TiO layer, which is the penetration depth of the incident light of wavelength corresponding to the maximum absorption of the N719 dye (~ 520 nm). When a GNP layer with a relatively high density of 1.3 μg/cm density was formed at its position, and two GNP layers with a relatively low density of 0.65 μg/cm were formed near the front side of the incident light, the short-circuit current density (Jsc) and energy conversion efficiency (η) of the DSSC were found to be 10.8 mA/cm and 5.0%, increases of 15 and 11%, respectively, compared with those of the DSSC without GNPs. Our work suggests that optimization of the distribution of GNPs in the TiO layer is very important for improving the performance of DSSCs fabricated by utilizing GNPs.
通过在导电玻璃上重复涂抹TiO浆料和金纳米颗粒（GNP）溶液，制备了具有堆叠结构的包含金纳米颗粒和TiO薄层的光阳极，以改变GNP在TiO层中的分布。研究了具有这种光阳极的染料敏化太阳能电池（DSSC）的等离子体增强特性。当GNP集中在TiO层中对应于N719染料最大吸收波长（~520nm）的入射光穿透深度的位置附近时，发现TiO层的吸收和DSSC的性能通过等离子体增强得到最大程度的提高。当在该位置形成密度相对较高为1.3μg/cm的GNP层，并在入射光前侧附近形成两个密度相对较低为0.65μg/cm的GNP层时，发现DSSC的短路电流密度（Jsc）和能量转换效率（η）分别为10.8mA/cm和5.0%，与没有GNP的DSSC相比，分别提高了15%和11%。我们的工作表明，优化GNP在TiO层中的分布对于提高利用GNP制造的DSSC的性能非常重要。
