影像科学与光化学2012，Vol.30Issue(1)：33-42,10.
混合溶剂热合成BaFBr∶Eu2+微纳米晶其性能表征
Mixed Solvothermal Synthesis and Characterization of BaFBr ∶ Eu2+ Nano/Micro-Crystals
梁庆华 1史瑶 2马望京 1杨新民 1李智1
作者信息
- 1. 中国科学院理化技术研究所,北京100190
- 2. 中国科学院研究生院,北京100049
- 折叠
摘要
Abstract
Uniform BaFBr · Eu2+ nano/micro-crystals with different morphology and size were prepared by solvothermal method in the ethanol-water mixed solvents. A possible formation process of the products was proposed on the basis of phase and morphology results under different reaction conditions. The phase structure, morphology and optical properties of the products were characterized by X-ray diffraction (XRD), field-emission scanning electron microscopy ( FESEM), transmission electron microscopy (TEM), high-resolution TEM (HRTEM) and photoluminescence (PL). Preliminary results reveal that the phase, size and morphology of the products strongly depend on the reaction time, temperature and surfactant amounts. Annealing at 300 ℃ under reducing atmosphere and excited at 280 nm UV-light, the BaFBr ∶ Eu2+ samples show sharp emission at 390 nm due to the transitions of 4f6 5d1→4f7 of Eu2+ , which suggests the as-prepared BaFBr ∶ Eu2+ is a promising X-ray storage phosphor in imaging plates for computed radiography.关键词
X射线成像/混合溶剂热合成/氟溴化钡/微纳米晶/发光材料Key words
X-ray imaging/ solvothermal synthesis/ BaFBr/ nano/micro-crystal/ luminescence material分类
化学化工引用本文复制引用
梁庆华,史瑶,马望京,杨新民,李智..混合溶剂热合成BaFBr∶Eu2+微纳米晶其性能表征[J].影像科学与光化学,2012,30(1):33-42,10.
