| Project/Area Number |
18K04247
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 21050:Electric and electronic materials-related
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| Research Institution | Okinawa Institute of Science and Technology Graduate University |
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Principal Investigator |
Cassidy Cathal 沖縄科学技術大学院大学, 量子波光学顕微鏡ユニット, スタッフサイエンティスト (40792156)
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| Project Period (FY) |
2018-04-01 – 2022-03-31
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| Project Status |
Completed (Fiscal Year 2021)
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| Budget Amount *help |
¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2020: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2019: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
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| Keywords | holography / semiconductor / CdTe / electron holography / Electron holography / EELS / device / microscopy / electron |
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| Outline of Final Research Achievements |
The electron holography method can uniquely and quantitatively image the potential distribution in a semiconductor material at the nanoscale level. On the other hand, CdTe is considered to be extremely useful as a material for next-generation medical imaging detectors, but there is still much room for improvement in the characteristics of the detector. The main causes are the material defects of CdTe itself and the deterioration of electrical properties due to the semiconductor-metal junction interface. This project aims to elucidate the effects of CdTe defects by observing at the nanoscale level using electron holography, and to contribute to improving the characteristics of the CdTe detector.
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| Academic Significance and Societal Importance of the Research Achievements |
We have measured intrinsic material parameters that were previously unknown. We have also clarified the underlying physics which defines mean free paths in off-axis holography. We have established a collaboration with a local CdTe semiconductor company to continue the research.
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