荧光粉
蓝移
电子顺磁共振
材料科学
衍射
顺磁性
激发
热液循环
化学
分析化学(期刊)
光致发光
凝聚态物理
光学
光电子学
核磁共振
物理
化学工程
工程类
量子力学
色谱法
作者
Jong Su Kim,Jin Su Kim,Hong Lee Park
标识
DOI:10.1016/j.ssc.2004.07.026
摘要
Nanosized ZnGa2O4:Cr3+ powder is synthesized through hydrothermal method. The average particle size is 20 nm and they are spherical in shape. The excitation band from the charge transfer between Cr3+–O2− shows a blueshift behavior due to quantum confinement effect. X-ray diffraction pattern, Fourier transform-infrared spectrum, and electron paramagnetic resonance signal indicate that nanosized ZnGa2O4:Cr3+ phosphor shows many defect-related energy states and heavy lattice distortion in comparison with bulk ZnGa2O4:Cr3+ phosphor. Many defect states result in more nonradiative loss and shorter decay time.
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