| Project/Area Number |
15K06448
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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 |
Inorganic materials/Physical properties
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| Research Institution | National Institute for Materials Science |
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Principal Investigator |
XIE RONG-JUN 国立研究開発法人物質・材料研究機構, サイアロングループ, 主席研究員 (00370297)
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2016: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
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| Keywords | レーザー照明 / 蛍光体 / 窒化物 / ガラス / 発光ガラス / 発光セラミックス / 発光材料 / 輝度飽和 / 量子効率 / 熱伝導率 / 微構造 / 透光性 / 固体照明 |
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| Outline of Final Research Achievements |
The blue laser-driven solid-state lighting is superior to white LEDs in super-high power density and super-high brightness, which attracts great attention in recent year. In this research, we attempted to develop luminescent phosphor-in-glass (PiG) and ceramic materials as color converters in laser lighting, and investigated the preparation of nitride PiG and ceramic materials and their photoluminescence properties under blue laser irradiations. The results showed that translucent PiG luminescent materials could be prepared at low temperatures, but they exhibited strong luminescence saturation under the high-power blue laser excitation. In addition, highly densified luminescent ceramics could be fabricated by using spark plasma sintering. These luminescent ceramics had relatively higher thermal conductivities, and thus showed less luminescence saturation than the PiG materials.
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