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J. Korean Ceram. Soc. > Volume 52(1); 2015 > Article
Journal of the Korean Ceramic Society 2015;52(1): 9.
doi: https://doi.org/10.4191/kcers.2015.52.1.9
FTO 기판위 TiO2 나노로드의 시드박막층
김현, 양비룡
금오공과대학교 신소재공학
Seed Layers in TiO2 Nanorods on FTO
Hyun Kim, Bee Lyong Yang
School of Advanced Materials and System Engineering, Kumoh National Institute of Technology
Nano-structured electrodes were fabricated to develop efficient photoelectrochemical conversion systems for the synthesis of hydrogen from water and hydrocarbon fuels from $CO_2$. In this work, we compared the photoactivity of rutile $TiO_2$ nanorods grown on FTO and SEED/FTO by a hydrothermal method. An analysis of the microstructures showed that the density of nanorod/SEED/FTO samples, which showed only the (002) peak in their x-ray diffraction patterns, was two times higher than that of a nanorod/FTO sample. The photocurrent density of nanorod/SEED/FTO samples was increased by as much as 40% of the photocurrent density of the nanorod/FTO sample due to the increased specific density of the nanorods. However, the transient time for a recombination of photogenerated electrons and holes was 20 times faster in the nanorod/SEED/FTO. The seed layers are discussed as possible recombination sites.
Key words: Seed layer, Titanium dioxide($TiO_2$) nanorod, Photoelectrochemistry(PEC)
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