長残光性蛍光体SrAl<sub>2</sub>O<sub>4</sub>:Eu<sup>2+</sup>, Dy<sup>3+</sup>の特性に及ぼすアルミナ原料の影響
書誌事項
- タイトル別名
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- Effect of Alumina Sources on the Fluorescence Properties of Long Persistent Phosphor, SrAl<sub>2</sub>O<sub>4</sub>:Eu<sup>2+</sup>, Dy<sup>3+</sup>
- 長残光性蛍光体SrAl₂O₄:Eu²⁺,Dy³⁺の特性に及ぼすアルミナ原料の影響
- チョウ ザンコウセイ ケイコウタイ SrAl ₂ O ₄:Eu ² ⁺,Dy ³ ⁺ ノ トクセイ ニ オヨボス アルミナ ゲンリョウ ノ エイキョウ
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説明
<p>The long afterglow phosphor SrAl2O4:Eu2+, Dy3+ with various particle size and shape were prepared by solid state reaction at 1200~1500°C for 3 h. In the synthesis, five kinds of α-Al2O3 were used as the starting materials, whose particle size ranged between submicron and a hundred micron orders. The peak intensity of excitation and emission spectra and the afterglow life time depended on the size of calcined particle, showing the higher performance with the larger particle size. SrAl2O4:Eu2+, Dy3+ synthesized using the alumina with a few micron size of primary particle but forming 50 μm of secondary particles showed high particle growth rate even at the low calcination temperature of 1200°C, giving almost the similar particle size until at 1500°C. Accordingly, the phosphorescence property was also independent on the calcined temperature. On the other hand, SrAl2O4:Eu2+, Dy3+ prepared from the alumina with 0.1~0.5 μm of dispersed particles depended largely on the calcined temperature, showing the highest performance for the samples prepared at 1400~1500°C. The large particles with smooth surface were effective for the high emission and afterglow properties.</p>
収録刊行物
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- 粉体および粉末冶金
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粉体および粉末冶金 65 (4), 176-182, 2018-04-15
一般社団法人 粉体粉末冶金協会
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詳細情報 詳細情報について
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- CRID
- 1390001206310446080
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- NII論文ID
- 130006742148
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- NII書誌ID
- AN00222724
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- ISSN
- 18809014
- 05328799
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- NDL書誌ID
- 029012770
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDLサーチ
- Crossref
- CiNii Articles
- OpenAIRE
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- 抄録ライセンスフラグ
- 使用不可
