본문영역
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융대원 나노융합학과 세미나 안내 - 연사 : Prof. Jin Ho Bang
작성자 : 관리자작성일 :2012-04-03 09:47:18조회수 : 3555
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Title : Development of Semiconductor Nanocomposites for Enhanced Solar Energy Conversion Efficiency Date & Time : 2012. 4. 4. 수요일 17:00 Where : 융대원 D-123 Abstract The development of nanocomposite systems that enable efficient solar energy conversion has been substantial and continuing interest in nanomaterial research. A number of successful utilization of nanocomposites has been demonstrated in water-splitting and solar cell applications. In this talk, the development of novel heterostructured nanocomposites will be presented. The first part of the talk includes the synthesis of TiO2–SrTiO3 nanotubes and their utilization in photoelectrochemical water-splitting. This new nano-heterojunctions facilitate charge carrier separation and suppress charge recombination, thus significantly improving photocatalytic activity. TiO2–SrTiO3 nanotube arrays were further utilized as a novel oxide substrate for CdS quantum dot sensitized solar cells (QDSCs). SrTiO3 on TiO2 surface passivates surface states of TiO2 and builds cascade-structured band alignment, which significantly reduces charge recombination at electrode surface. Thus, CdS/TiO2–SrTiO3 electrode exhibits a superior photoelectrochemical performance than CdS/TiO2 electrode with ~70% increase in external quantum efficiency. In the second part of the talk, the development of nanostructured quantum dots (QDs) and fullerene composite will be presented. This research provides more insight into CdSe QD–C60 hybrid nanocomposite in terms of electron transfer kinetics and photoelectrochemical performance. Spectroscopic analysis combined with photoelectrochemical study reveal that the size dependency of both properties appears in an opposite trend, which is attributed to the unique physical properties of CdSe QDs. ※ 자세한 내용은 첨부문서를 참고해 주시기 바랍니다. |
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| 첨부파일 | 12.04.04_나융_prof._jin_ho_bang.doc [72건 다운로드] |
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| 이전글 | (채용공고)차세대융합기술연구원 직원 채용 공고 2012-03-28 |
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| 현재글 | 융대원 나노융합학과 세미나 안내 - 연사 : Prof. Jin Ho Bang 2012-04-03 |
| 다음글 | (공지)나노프리모연구센터 남민호 연구원이 미래 기초과학 핵심리더 양성 사업에 선발되었습니다. 2012-04-04 |
