Shin Kahee, Jun Yongseok, Han Gui Young, Park Jong Hyeok
Department of Chemical Engineering, Sungkyunkwan University, Suwon 440-746, Korea.
J Nanosci Nanotechnol. 2009 Dec;9(12):7436-9. doi: 10.1166/jnn.2009.1768.
The authors present the first reported use of vertically oriented titanium oxide nanotube/titanium oxide nanoparticle nanocomposites to improve the efficiency of TiO2 based dye-sensitized solar cells (DSSCs). Titanium oxide nanotubes incorporating titanium oxide nanoparticles were prepared to harvest more solar light, and their solar-to-electric conversion efficiency was characterized. The incorporation of the titanium oxide nanoparticles increased the visible light absorption of the titanium oxide nanotube based DSSC system because of the increased light absorption resulting from the increased surface area. However, the photocurrent enhancement was more obvious under the illumination of visible light with a wavelength longer than 550 nm owing to the light scattering effect of the titanium oxide nanoparticles.
作者首次报道了使用垂直取向的二氧化钛纳米管/二氧化钛纳米颗粒纳米复合材料来提高基于TiO₂的染料敏化太阳能电池（DSSC）的效率。制备了包含二氧化钛纳米颗粒的二氧化钛纳米管以捕获更多太阳光，并对其光电转换效率进行了表征。由于表面积增加导致光吸收增加，二氧化钛纳米颗粒的掺入提高了基于二氧化钛纳米管的DSSC系统的可见光吸收。然而，由于二氧化钛纳米颗粒的光散射效应，在波长大于550nm的可见光照射下，光电流增强更为明显。
