Lutetium Eu3+based on the 4f6 electronic configuration and sharp red light emission characteristics, it has excellent reducing activity and luminous efficiency, and is a key precursor for the preparation of fluorescent materials, anti-counterfeiting inks, and X-ray intensifying screens, especially its high purity characteristics (≥99.99%) meet the needs of high-end optoelectronic applications.
Chemical properties
- Solubility: Slightly soluble in water ( solubility at 25℃ ≈ 0.003 g/100mL ), soluble in dilute acid ( solubility rate in 1M HNO3>15g/min )
- Luminescence properties: emit red light at 613nm under ultraviolet excitation (5D0→7F2transition)
- Thermal stability: The differential thermal analysis shows an exothermic peak (Eu3+→Eu2+transformation)
Application fields
Luminous materials
- LED Fluorescent Powder: Y2O3:Eu3+Red Fluorescent Powder (Color Coordinates x=0.65, y=0.35)
- Anti-counterfeiting material: Eu3+Complex compound ink (UV excited color development)
Radiation detection
- X-ray intensifying screen: Gd2O2S: Eu3+Preparation ( conversion efficiency > 20% )
- Scintillator: Eu:LiCaAlF6Neutron Detector Material
Fnctional materials
- Oxidized Eu preparation: High purity Eu2O3precursor (purity > 999%)
- Glass colorants: preparation of photochromic glass
