金属－半導体周期構造によるプラズモン誘起電荷分離と光機能デバイスへの応用
| Project/Area Number |
17J05208
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| Research Category |
Grant-in-Aid for JSPS Fellows
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| Allocation Type | Single-year Grants |
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| Section | 国内 |
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| Research Field |
Inorganic industrial materials
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| Research Institution | The University of Tokyo |
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Principal Investigator |
ウー リン 東京大学, 工学系研究科, 特別研究員(DC2)
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| Project Period (FY) |
2017-04-26 – 2019-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 2017: ¥1,100,000 (Direct Cost: ¥1,100,000)
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| Keywords | plasmon / charge separation / metal halfshell arrray / photochemistry / photovoltaics |
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| Outline of Annual Research Achievements |
This study was focused on two dimensionally ordered and interconnected Au halfshell arrays on SiO2@TiO2 core-shell colloidal crystals.
(1) Photoelectrochemical properties of Au Halfshells with Different Sizes
Au halfshell arrays with different sizes were obtained by evaporating Au onto the SiO2@TiO2 colloidal crystals with various SiO2 cores. The optical properties of the Au halfshell arrays are studied both experimentally and computationally. The electrodes with Au halfshell arrays showed broad absorption in the range examined (300-1000 nm). It was found that the photoelectrode with the middle-sized SiO2 cores of 374 nm diameter shows the highest PICS-based photocurrent responses. According to the FDTD simulated results, the high responses can be explained in terms of the high electric field intensity at the electrode.
(2) Photovoltaic Cells with Gold, Silver, and Copper Halfshell Arrays
Solid-state cells were developed by taking advantage of the two-dimensional structure of the metal halfshell array, which serves both as a light absorber and a current collector. Under visible light irradiation, all the cells generated photovoltage between the transparent fluorine-doped tin oxide electrode and the metal halfshell array electrode. The photovoltaic properties of Ag halfshell cells were compared with those of Au and Cu halfshell cells. The Ag halfshell cells had higher photovoltaic performance than Au and Cu halfshell cells, achieving the highest power conversion efficiency (PCE) among the solid-state PICS devices.
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| Research Progress Status |
翌年度、交付申請を辞退するため、記入しない。
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| Strategy for Future Research Activity |
翌年度、交付申請を辞退するため、記入しない。
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Report
(1 results)
Research Products
(2 results)
