| 학회 |
한국공업화학회 |
| 학술대회 |
2015년 가을 (11/04 ~ 11/06, 제주국제컨벤션센터(ICCJEJU)) |
| 권호 |
19권 2호 |
| 발표분야 |
고분자_포스터 |
| 제목 |
Lithium-assisted Surface Reduction of Bismuth Vanadate (BiVO4) for Enhanced Photoelectrochemical Water Splitting |
| 초록 |
We report the effect of chemical reduction of bismuth vanadate (BiVO4) photoelectrdoe by lithium-based strongly basic solution. Lithium dissolved in ethylenediamine anhydrous rapidly reduces the bismuth vanadate films by momentary immersion in the solution. This chemical reduction creates oxygen vacancies and these defect sites could act as shallow donors for bismuth vanadate and increase the donor densities without trapping. Electrochemical impedance measurements showed that the donor densities of bismuth vanadate films were significantly enhanced. Photoelectrochemical water splitting performance was improved as well with photocurrent increase. The enhanced photoactivities were attributed to increased donor densities of reduced bismuth vanadate, which have effects on the charge transpot. |
| 저자 |
박종혁1, 정명진2
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| 소속 |
1연세대, 2성균관대 |
| 키워드 |
Photoelectrochemical; Water Splitting; BiVO4; Oxygen Vacancy; Chemical Reduction; Donor Density; Charge transport
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| E-Mail |
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