posted on 2016-02-20, 13:47authored byKun Seok Lee, Jeong Kwon, Jeong
Hyeok Im, Chang Ryul Lee, Nam-Gyu Park, Jong Hyeok Park
Size-tunable titanium oxide (TiO2) nanotube
powders
offering both a light-scattering effect and a light-harvesting function
were synthesized by a fast and facile anodizing method. When used
to prepare the TiO2 layer for a photoanode, their photovoltaic
performances were much worse than that of a nanocrystal TiO2 layer. However, when the TiO2 nanotube powders were used
as a light-scattering layer on a nanocrystal TiO2 layer,
the highest conversion efficiency was obtained because of more noticeable
light absorption of the longer wavelength, which was not attainable
from a pure nanocrystal TiO2 layer or the combination of
nanocrystal TiO2/commercialized light-scattering particles.