含Y2Ti2O7晶相Tb3+掺杂玻璃陶瓷的上转换发光特性

Xinming Yu, Hongbo Zhang, C. Su
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引用次数: 0

摘要

近年来,稀土掺杂光学材料在w- led、光学显示、激光器等领域得到了广泛的应用。含钛酸盐晶体相的玻璃陶瓷因其具有较高的热稳定性和化学稳定性、优异的发光性能和较低的声子能量而被广泛应用于发光材料的基体中。然而,具有焦绿石结构的Y2Ti2O7由于其低声子能量(712 cm-1)而被认为是一种良好的上转换发光基质。通过熔融结晶法制备了Tb3+掺杂透明玻璃陶瓷(GCs)。用x射线衍射法测定了玻璃陶瓷中Y2Ti2O7的晶相。该玻璃陶瓷在可见光区的透光率可达71%。Tb3+掺杂浓度为0.4%时,发射强度最强。与前驱体玻璃相比,玻璃陶瓷具有更高的发光强度。结果表明,含Y2Ti2O7晶体的Tb3+掺杂透明玻璃陶瓷可用于绿光发射领域。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Up-conversion luminescence properties of Tb3+ doped glass ceramics containing Y2Ti2O7 crystalline phase
In recent years, rare earth doped optical materials have been widely used in w-LEDs, optical displays and lasers. Glass ceramics containing titanate crystal phases are widely used in the matrix of luminescent materials because of their high thermal and chemical stability, excellent luminescence properties, and low phonon energy. However, Y2Ti2O7 with a pyrochlore structure is considered a good up-conversion luminescent matrix owing to its low phonon energy (⪅712 cm-1). By the melt crystallization, Tb3+ doped transparent glass ceramics (GCs) were prepared. Y2Ti2O7 crystal phase in glass ceramics was decided by using x-ray diffraction. The light transmittance of the glass ceramics can reach 71% in the visible region. The emission intensity is the strongest when the doping concentration of Tb3+ is 0.4%. Compared with the precursor glass, glass ceramics have higher luminescence intensity. It can be concluded that Tb3+ doped transparent glass ceramics containing Y2Ti2O7 crystal can be used in green light emission fields.
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