摘要
采用燃烧法制备了ZnMoO4∶Tb3+绿色荧光粉。XRD实验结果表明,样品在700℃基本形成单一的ZnMoO4相,属三斜晶系,而Tb3+的掺入基本不影响ZnMoO4的结构;TG-DTA研究结果表明,样品在680℃基本形成ZnMoO4相;IR结果表明,在700℃燃烧后,没有出现其他有机物的峰,说明柠檬酸已完全分解,掺杂的少量Tb3+已完全溶入了ZnMoO4的晶格中,形成ZnMoO4∶Tb3+固溶体;SEM结果表明,700,750,800℃制备的样品随温度的提高颗粒的分散度逐渐提高;激发光谱的主要变化是随着ZnMoO4∶Tb3+的生成而产生出主峰为488nm处的强峰;发射光谱结果表明,随着ZnMoO4∶Tb3+的形成,最佳激发波长488nm下,出现了很强的544nm处的发射峰,对应于Tb3+的5 D4→7 F5跃迁。通过ZnMoO4中掺杂Tb3+,获得了一种有潜在应用价值的绿色荧光粉。
Tb^3＋ doped ZnMoO4 materials were synthesized by combustion method. XRD results show that the samples completely formed single ZnMoO4 phase at 700 ℃ which belongs to Trigonal, while the incorporation of Tb^3＋ does not affect the basic structure of ZnMoO4. The TG-DTA results show that the samples fully formed ZnMoO4 phase due to the energy absorption at about 680 ℃. IR results show that there were no other organic peaks after burning at 700 ℃, indicating that citric acid has been completely decomposed and Tb^3＋ ions have been fully integrated into the lattice of ZnMoO4. SEM results show that the dispersion of particles gradually increases along with the improvement of the temperature. The best excitation wavelength was 488 nm when the monitoring wavelength was 544 nm, which corresponds to the ^5D4→^7F5 transition of Tb^3＋. Finally, a valuable green fluorescent powder of ZnMoO4 ： Tb^3＋ has been obtained.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
2012年第10期2605-2610,共6页
Spectroscopy and Spectral Analysis
基金
国家自然科学基金项目(51174020)
内蒙古自然科学基金项目(2010MS0205)资助
