Synthesis and Fluorescence Quantum Yield of Gd<sub>1-x</sub>Eu<sub>x</sub>OOH Crystals

• 作者: Daisuke Itakura Hiroaki Samata Shungo Imanaka Tadashi C. Ozawa
• 来源期刊: 材料科学与化学工程(英文)
• 学科: 化学
• 关键词: GADOLINIUM Oxyhydroxide Fluorescence Quantum Yield PERCOLATION Model
• 年，卷（期）: 2014,（3）
• 页码范围: 23-29
• 页数: 7页
• 分类号: O6

摘要

Eu3+-doped gadolinium oxyhydroxide Gd1-xEuxOOH crystals were synthesized by the flux method. The X-ray diffraction data for the crystals were well refined assuming a monoclinic structure with the P21/m space group. Gd1-xEuxOOH (x ≤ 0.2) crystals showed strong red emission, and the highest fluorescence quantum yield (Φf) was 0.27, obtained for x = 0.10. Φf decreased rapidly as the Eu3+ content x increased above 0.2, owing to concentration quenching. Analysis with a percolation model indicated three-dimensional energy transfer between the Eu3+ ions.