2014 Fiscal Year Final Research Report
Synthesis of Functional Nitride Materials by Ammonothemal Method
| Project/Area Number |
24550237
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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 industrial materials
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| Research Institution | Meiji University |
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Principal Investigator |
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Keywords | 人工光合成 / 光触媒 / アンモノサーマル法 / アモノサーマル法 / 白色ＬＥＤ / 窒化物 / 酸窒化物 / 低温合成 |
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| Outline of Final Research Achievements |
The new ammonothermal reactor has been developed. It has lower dead volume than previous one. SrAlSiN3:Eu2+ is a red-emitting phosphor that is potentially very useful in white light-emitting diodes because of its properties such as thermal stability and bright emissivity features.A limitation of this phosphor is that it is commonly synthesized at high temperature and pressure. To address this limitation, we investgate a low-temperature synthesis of SrAlSiN3:Eu2+ phosphors through a dissolution–precipitation process in supercritical ammonia and the phosphors’ physical properties. All products exhibit a broad emission that is centered at approximately 580 nm, which we attribute to the 5d→4f transition of Eu2+, under excitation wavelengths from the ultraviolet to blue range.
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| Free Research Field |
無機材料合成
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