Preparation and luminescent properties of MgTiO3:Eu3+ phosphor for white LEDs
来源期刊：Journal of Rare Earths2012年第10期
论文作者：张健 尹静 刘盼盼 高斌 别利剑
文章页码：1009 - 1012
摘 要：A novel red phosphor Eu3+ doped magnesium titanate （MgTiO3） was synthesized via sol-gel method. The X-ray diffraction patterns （XRD） revealed that a pure MgTiO3 phase was obtained. Its excitation spectrum consisted of a broad band （<350nm） and a series of narrow bands in the long wavelength, and the strongest excitation peak at 465nm might be exited by GaN-chip to emit red light for white LED. The phosphors showed strong emission at 614nm which could be attributed to the 5D0→7F2 emission of Eu3+ . The emission intensity of MgTiO3:Eu3+ phosphor reached the maximum at the Eu3+ concentration of 3.5mol.%. The luminescent properties （such as emission intensity and decay times） were further improved by introducing Al3+ as a charge compensator, demonstrating potential applications in white LED.
张健1，尹静2，刘盼盼1，高斌1，别利剑1,3
1. School of Materials Science and Engineering, Tianjin University of Technology2. School of Environmental Science and Safety Engineering, Tianjin University of Technology3. Tianjin Key Lab for Photoelectric Materials & Devices, Tianjin University of Technology
摘 要：A novel red phosphor Eu3+ doped magnesium titanate （MgTiO3） was synthesized via sol-gel method. The X-ray diffraction patterns （XRD） revealed that a pure MgTiO3 phase was obtained. Its excitation spectrum consisted of a broad band （<350nm） and a series of narrow bands in the long wavelength, and the strongest excitation peak at 465nm might be exited by GaN-chip to emit red light for white LED. The phosphors showed strong emission at 614nm which could be attributed to the 5D0→7F2 emission of Eu3+ . The emission intensity of MgTiO3:Eu3+ phosphor reached the maximum at the Eu3+ concentration of 3.5mol.%. The luminescent properties （such as emission intensity and decay times） were further improved by introducing Al3+ as a charge compensator, demonstrating potential applications in white LED.
关键词：
