Department of Chemical and Biomolecular Engineering, Sogang University, 1 Sinsu-dong Mapo-gu, Seoul, Republic of Korea.
ACS Appl Mater Interfaces. 2010 Nov;2(11):2970-3. doi: 10.1021/am100681f. Epub 2010 Oct 27.
We describe a multibeam interference lithography for creating 3D polymeric porous structures. The coating of a TiO(2) shell and subsequent removal of the template produce holographically defined TiO(2) (h-TiO(2)) electrodes. We analyze the morphological features of the h-TiO(2) electrodes and consider their applicability to dye-sensitized solar cells (DSSCs). Specifically, the performance of the h-TiO(2) electrode was evaluated by comparison with a macroporous TiO(2) electrode produced from colloidal crystals. The h-TiO(2) structure possesses a larger specific area than the inverted colloidal crystals because of a bicontinuous air network with the TiO(2) shell. Consequently, the h-TiO(2) electrode can produce a 30% higher photogenerated electron current.
我们描述了一种用于创建 3D 聚合物多孔结构的多光束干涉光刻技术。TiO(2)壳的涂层和随后的模板去除产生全息定义的 TiO(2)（h-TiO(2)）电极。我们分析了 h-TiO(2)电极的形态特征，并考虑了它们在染料敏化太阳能电池（DSSC）中的应用。具体而言，通过与由胶体晶体产生的大孔 TiO(2)电极进行比较，评估了 h-TiO(2)电极的性能。由于具有 TiO(2)壳的双连续空气网络，h-TiO(2)结构具有比倒置胶体晶体更大的比表面积。因此，h-TiO(2)电极可以产生 30%更高的光生电子电流。
