Independent control of phonon and electron transports based on the interface physics by using heteronanostrucutre interfaces
Project/Area Number |
15K13276
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Research Category |
Grant-in-Aid for Challenging Exploratory Research
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Allocation Type | Multi-year Fund |
Research Field |
Nanostructural physics
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Research Institution | Osaka University |
Principal Investigator |
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Co-Investigator(Renkei-kenkyūsha) |
Kikkawa Jun 独立行政法人 物質・材料研究機構, その他部局等, 研究員 (20435754)
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Project Period (FY) |
2015-04-01 – 2018-03-31
|
Project Status |
Completed (Fiscal Year 2017)
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Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
|
Keywords | エピタキシー / Si / 熱電材料 / ナノドット / エピキシー |
Outline of Final Research Achievements |
Our objective is enhancing electrical conductivity while reducing thermal conductivity by controlling SiGe/Si interfaces for the wavenumber conservation. First, we proposed the stacking structures of SiGe epitaxial nanodots/Si as an ideal nanostructure based on this concept. We succeeded in developing the formation method of epitaxial stacking structure of ultrasmall SiGe nanodots/Si layers using ultrathin SiO2 film technique. Next, to demonstrate the above concept, we investigated the electrical properties of SiGe/Si supperlattice. As a result, we succeeded in the electric mobility of supperlattice as high as that of epitaxial Si films. The mechanism of electric transport that causes the high electric mobility is needed to be investigated more, but we successfully obtained the results we expected.
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Report
(4 results)
Research Products
(110 results)
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[Presentation] Size and shape control of epitaxial β-FeSi2 nanodots in Si-based nanoarchitecture toward advanced thermoelectric materials2016
Author(s)
Shunya Sakane, Kentaro Watanabe, Tatsuhiko Taniguchi, Masayuki Isogawa, Shuto Yamasaka, Shinya Tsurusaki, Shotaro Takeuchi, Akira Sakai, and Yoshiaki Nakamura
Organizer
Asia-Pacific Conference on Semiconducting Silicides and Related Materials
Place of Presentation
Kyushu University, Fukuoka City, Fukuoka Pref.
Year and Date
2016-07-16
Related Report
Int'l Joint Research
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[Presentation] Thermoelectric properties of epitaxial β-FeSi2 thin films/Si(111)2016
Author(s)
Tatsuhiko Taniguchi, Shunya Sakane, Shunsuke Aoki, Kentaro Watanabe, Takeyuki Suzuki, Takeshi Fujita, and Yoshiaki Nakamura
Organizer
The 35th International Conference & The 1st Asian Conference on Thermoelectrics (ICT/ACT2016)
Place of Presentation
Wuhan, P. R. China
Year and Date
2016-05-29
Related Report
Int'l Joint Research
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