| 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 |
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| ABSTRACT |
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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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