Formation of infrared optical absorption band and intermediate band by hyperdoping of silicon
| Project/Area Number |
24560020
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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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| Research Field |
Applied materials science/Crystal engineering
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| Research Institution | Konan University |
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Principal Investigator |
UMEZU IKUROU 甲南大学, 理工学部, 教授 (30203582)
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| Co-Investigator(Kenkyū-buntansha) |
YOSHIDA Takehito 阿南工業高等専門学校, 創造技術工学科, 教授 (20370033)
INADADA Mitsuru 関西大学, システム理工学部, 准教授 (00330407)
KOHNO Atsushi 福岡大学, 理学部, 教授 (30284160)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2013: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2012: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | レーザープロセッシング / 中間バンド / 過飽和ドーピング / 半導体 / 太陽電池 / 深い準位 / レーザーアニーリング / 金属非金属転移 / 赤外光吸収 / シリコン / 過飽和ドープ / 非平衡プロセス / パルスレーザーメルティング / 非平衡材料プロセス |
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| Outline of Final Research Achievements |
Hyperdoping of silicon with deep impurities is one of the candidates to improve efficiency of solar cells. We suggested appropriate conditions to prepare samples with less segregation keeping single crystal structure by pulsed laser processes. The results of optical absorption and electric conductivity are inconsistent, if we assume, as discussed previously, that both the metallic conductivity and large mid-infrared absorption are due to the formation of intermediate band. We proposed new candidates of the origin of these characters based on the experimental results.
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Report
(4 results)
Research Products
(44 results)
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[Presentation] Hyperdoping of silicon with deep-level impurities by pulsed YAG laser melting2013
Author(s)
Ikurou Umezu, Muneyuki Naito, Daisuke Kawabe, Yusuke Koshiba, Katsuki Nagao, Akira Sugimura, Tamao Aoki, Mitsuru Inada, Tadashi Saitoh, Atsushi Kohno
Organizer
The 12th International Conference on Laser Ablation
Place of Presentation
Ischia,Italy
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