| Project/Area Number |
13450013
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Applied materials science/Crystal engineering
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| Research Institution | Osaka University |
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Principal Investigator |
KOBAYASHI Takeshi Osaka University, Graduate School of Engineering Science, Professor, 大学院・基礎工学研究科, 教授 (80153617)
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| Co-Investigator(Kenkyū-buntansha) |
FUJII Tatsuhiko Osaka University, Graduate School of Engineering Science, Lecturer, 大学院・基礎工学研究科, 講師 (40238530)
MAKI Tetsuro Osaka University, Graduate School of Engineering Science, Assistant Professor, 大学院・基礎工学研究科, 助手 (80273605)
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| Project Period (FY) |
2001 – 2002
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| Project Status |
Completed (Fiscal Year 2002)
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| Budget Amount *help |
¥14,500,000 (Direct Cost: ¥14,500,000)
Fiscal Year 2002: ¥3,600,000 (Direct Cost: ¥3,600,000)
Fiscal Year 2001: ¥10,900,000 (Direct Cost: ¥10,900,000)
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| Keywords | PLD / GaN / ablation / InGaN / AlGaN / レーザーアブレーション / 薄膜 / エピタキシー / 半導体レーザー |
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| Research Abstract |
In this research project, we carried out the experimental work on the energy manipulation of the laser-ablated Ga particles for GaN, (InGa)N and (AlGa)N thin film growth. So far, most of works in this field have been done CVD and MBE. Very few reports on the laser ablation we can have. Recently, request to knowledge on the laser ablation of GaN system has been increasing.
We obtained for the first time the kinetic energy of Ga particles ablated from the molten gallium target by ArF excimer laser irradiation. The energy value was as high as 30 eV. Our proposal to suppress this energy value was the oblique incidence of the laser beam and N2 ambient pressure working as the scatter. Through these proposals, we obtained energy manipulation of flying Ga particles. Very much brilliant PL emission was achieved by this manner.
In addition to GaN binary system, we did obtained InGaN and AlGaN ternary systems which had narrower and wider bandgap energies as compared with GaN, respectively. For this purpose, a dual laser beam shot was built, working quite well.
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