EuKNaTaO5:結晶の成長,構造,そして光発光特性
Irina P Roof1, Mark D Smith, Sangmoon Park
1University of South Carolina, Department of Chemistry, 631 Sumter Street, Columbia, South Carolina 29208, USA.
Journal of the American Chemical Society
|March 12, 2009
まとめ
研究者らは,ドーピングなしで明るいオレンジ色の光の放出を示す新しい物質,ヨーロッパウム・カリウム・ナトリウム・タンタレット (EuKNaTaO5) を合成しました. このドーピングされていない,全く希土のタンタラートは,室温で固有の発光を示す.
科学分野:
- 固体化学 固体化学
- マテリアルサイエンス 材料科学
- 発光する光度 (luminescence)
背景:
- 発光はしばしば,希土元素を物質にドーピングすることで達成される.
- 本質的な発光性を持つドーピングされていない材料は,特定の用途で非常に求められています.
研究 の 目的:
- 新しいタンタラート化合物を合成し,特徴づけること.
- この新しい材料の内在的な発光特性について調査する.
- ドーピングされていない,すべて希土化合物の発光の可能性を探るため.
主な方法:
- KOH/NaOHのユーテクティック溶液からの単結晶の成長.
- 合成されたタンタラ酸塩の構造の決定.
- 放射特性を分析するための光発光スペクトロスコピー.
主要な成果:
- EuKNaTaO5.5の合成と結晶構造の決定に成功しました.
- 室温での明るいオレンジ色の光発光の観測.
- ドーピングされていない,全く希土のタンタラートにおける固有の発光の実証.
結論:
- EuKNaTaO5は,固有の発光特性を持つ新しいタンタラートです.
- この素材は,ドーピングの必要なしに,明るいオレンジ色の放射を放出します.
- この発見は,ドーピングされていない稀土化合物に基づく新しい発光材料の開発の道を開く.
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