| TiO2세라믹 전극의 광전기화학 변화에 미치는 첨가제 Al2O3와 Surface Roughness의 영향 |
| 윤기현, 박경봉 |
| 연세대학교 요업공학과 |
| Influence of Dopant Al2O3 and Surface Roughness on the photoelectrochemical Conversion of TiO2 Ceramic Electrodes |
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| ABSTRACT |
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The effects of dopant Al2O3 and surface roughness on the photoelectrochemical conversion of TiO2 ceramic electrodes were investigated. The photocurrent increased with increasing the amount of dopant Al2O3 up to 0.1wt% and 0.05wt% in the specimens reduced at 700$^{circ}C$ and 800$^{circ}C$, respectively, and then decreased. However, the photoresponse appeared around 415 nm, which very closely corresponds to the energy band gap of TiO2(∼3.0eV), regardless of reduction temperature and the amount of Al2O3. And the photocurrent increased with increasing surface roughness in the undoped TiO2 ceramic electrode. |
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