2015 Fiscal Year Annual Research Report
Fabrication of plasmonic metal nano-structures for photocurrent generation drawing an innovation for design of thin-film solar cells
| Project/Area Number |
25390001
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| Research Institution | Tohoku University |
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Principal Investigator |
ジェズニチカ イザベラ 東北大学, 理学(系)研究科(研究院), 准教授 (40565769)
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| Co-Investigator(Kenkyū-buntansha) |
鈴木 孝将 福岡大学, 工学部, 教授 (10580178)
柳生 数馬 福岡大学, 工学部, 助教 (90609471)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Keywords | 表面化学 / 金属有機構造体 / ラマン分光 / 表面分光 / プラズモニクス / 太陽電池 / 自己組織化 |
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| Outline of Annual Research Achievements |
In this year we have investigated formation of metal-organic framework structures on thin film of Au deposited on a silicon surface. Two organic ligands were used: a 4,4-bipyridine (BiPy), and 1,2-di(4-pyridyl)ethylene (BPE). It has been confirmed that inorganic ion-templated gold surface can be used for formation of well defined metal-organic framework structures. The resultant structures have been investigated using scanning tunneling microscopy and Raman spectroscopy. They are made of protonated ligand molecule and a surface chloride compound which guides their self-assembly into three dimensional structures via attractive hydrogen bonding and aurophilic (Au-Au) interactions. The size of the three-dimensional structures is so far limited into islands of about 10 um. The small size of the islands at present precludes measurement of their I-V characteristics. The metal-organic framework structures composed of BPE ligand have interesting optical properties. They are found to absorb 360 nm light, emitting blue light at room temperature. It is expected that proper selection of organic ligand will allow for tuning wavelength of the adsorbed light allowing for harvesting photons with the energy that can be absorbed by a silicon substrate.
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[Presentation] Determination of molecular orientation in monolayers adsorbed on metals using STM-based TERS2015
Author(s)
I. I. Rzeznicka, H. Horino, N. Kikkawa, S. Sakaguchi, A. Morita, S. Takahashi, T. Komeda, H. Fukumura, T. Yamada, M. Kawai
Organizer
The 15th International Conference on Vibrations at Surfaces
Place of Presentation
Donostia-San Sebastian, Spain
Year and Date
2015-06-22 – 2015-06-26
Int'l Joint Research
