| 학회 |
한국재료학회 |
| 학술대회 |
2017년 가을 (11/15 ~ 11/17, 경주 현대호텔) |
| 권호 |
23권 2호 |
| 발표분야 |
C. 에너지 재료 분과 |
| 제목 |
Nanorod Electrodes of CdS and CdSe for Photoelectrochemistry |
| 초록 |
Hydrogen is a clean and renewable energy that can be produced by the photoelectrochemical (PEC) water splitting method. It is also a method to store solar energy. The technology has been extensively studied during the past several decades, but cost-effective engineering devices has not been realized yet. The critical issues in the development are bandgap engineering of the photoelectrode semiconductors, good quality nonepitaxial materials synthesis, and photo-corrosion, etc. Therefore, solid understanding of the semiconductor-semiconductor and semiconductor-electrolyte interfaces is necessary. We fabricated 3-D nano-structural PEC electrodes towards high photocurrent density and conversion efficiency based on TiO2 nanorod template. CdS and/or CdSe overlays were taken as the main light-absorbing materials. Our focus was made in measurement and discussion of the band-diagram in the PEC system for solid understanding of the PEC process. We fabricated CdS/CdSe photoanode nano-structures showing a high performance of current density ~20 mA/cm2 and conversion efficiencies ＞10%, and discussed the PEC process. The voltage measurements between the three electrodes and their analysis were carried out towards band alignment at the semiconductor-electrolyte interface. |
| 저자 |
Nguyen Duc Quang, 김도진, 김천중, Truong Thi Hien
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| 소속 |
충남대 |
| 키워드 |
TiO2; CdS; CdSe; PEC; water splitting
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| E-Mail |
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