Direct imaging of dopant intercalation in two-dimensional materials
Project/Area Number |
15K18202
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Research Category |
Grant-in-Aid for Young Scientists (B)
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Allocation Type | Multi-year Fund |
Research Field |
Physical properties of metals/Metal-base materials
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Research Institution | The University of Tokyo |
Principal Investigator |
Ishikawa Ryo 東京大学, 大学院工学系研究科(工学部), 助教 (20734156)
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Project Period (FY) |
2015-04-01 – 2017-03-31
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Project Status |
Completed (Fiscal Year 2016)
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Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2015: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
|
Keywords | インターカレーション / 電子顕微鏡 / 単原子ドーパント / 蛍光体 / 走査透過型電子顕微鏡 / 二次元物質 / 低加速電子顕微鏡法 / 原子分解能 / モアレ |
Outline of Final Research Achievements |
After the success of GaN in blue-light-emission, researchers are exploring new materials for optoelectronic devises working in ultraviolet or far-ultraviolet wavelength ranges. In this study, we have investigated hexagonal boron nitride (h-BN) with doping rare-earth elements, exhibiting light luminescence. To elucidate the origin of light emission, we have used atomic-resolution scanning transmission electron microscopy, suggesting that the heavy dopants are location not in the lattice but between inter-layers: the dopants are intercalating. This result indicates that layer compounds could be useful to dope functional elements with relatively larger ionic radii compared to the bulk constituent elements.
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Report
(3 results)
Research Products
(40 results)
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[Journal Article] Transparent polycrystalline cubic silicon nitride.2017
Author(s)
N. Nishiyama, R. Ishikawa, H. Ohfuji, H. Marquardt, A. Kurnosov, T. Taniguchi, B.-N. Kim, H. Yoshida, A. Masuno, J. Bednarcik, E. Kulik, Y. Ikuhara, F. Wakai, T. Irifune
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Journal Title
Scientific Reports
Volume: 7
Issue: 1
Pages: 44755-44755
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Possible Absence of Critical Thickness and Size Effect in Ultrathin Perovskite Ferroelectric Films2017
Author(s)
P. Gao, Z. Zhang, M. Li, R. Ishikawa, B. Feng, H.-J, Liu, Y.-L. Huang, N. Shibata, X. Ma, S. Chen, J. Zhang, K. Liu, E.-G. Wang, D. Yu, L. Liao, Y. -H. Chu, Y. Ikuhara
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Journal Title
Nature Communications
Volume: 印刷中
Issue: 1
Pages: 15549-15549
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Visualizing the Mixed Bonding Properties of Liquid Boron with High-Resolution X-Ray Compton Scattering2015
Author(s)
J. T. Okada, P.H.-L. Sit, Y. Watanabe, B. Barbiellini, T. Ishikawa, Y.J. Wang, M. Itou, Y. Sakurai, A. Bansil, R. Ishikawa, M. Hamaishi, P.-F. Paradis, K. Kimura, T. Ishikawa, and S. Nanao
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Journal Title
Physical Review Letters
Volume: 114
Issue: 17
Pages: 177401-177401
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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