SrSnO_3:Eu^(3+)红色荧光粉的合成及发光性能的研究  

Synthesis and Photoluminescence Properties of Red-emitting Phosphor SrSnO_3:Eu^(3+)

作　　者：郝晨晖[1] 崔彩娥[1] 黄平[1] 王磊 时秋峰[1] 

机构地区：[1]太原理工大学物理与光电工程学院,太原030024

出　　处：《人工晶体学报》2017年第6期1009-1014,共6页Journal of Synthetic Crystals

基　　金：国家自然科学基金(51302182)

摘　　要：通过传统的高温固相法成功合成了SrSnO_3∶Eu^(3+)红色荧光粉。通过对样品X射线衍射图谱、激发发射图谱和衰减曲线的研究,证明了合成的SrSnO_3∶Eu^(3+)红色荧光粉是纯相而且具有良好的发光性能与热稳定性。SrSnO_3∶0.05Eu^(3+)荧光粉在396 nm激发下Eu^(3+)通过~5D_0→~7F_2能级跃迁,在614 nm处发出比较强烈的红光,色坐标为(0.608,0.386),通过计算得出温度猝灭的活化能ΔE=0.138 e V。综上所述,SrSnO_3∶Eu^(3+)荧光粉是一种比较有前途的白色LED用近紫外蓝光激发红色荧光粉。A red-emitting phosphor SrSnO3： Eu3＋ was synthesized through the high temperature solid-state method in this article. The phosphors were characterized by X-ray powder diffraction. The characteristic photoluminescence properties were studied in detail by photoluminescence excitation, emission spectra and decay time. The red-emitting phosphor SrSnO3： Eu3＋ was proved to be a pure phase, and with good luminescent properties and thermal stability. Under excitation at 396 nm, sharp red light can be observed due to the 5Do→7F2 transition of the 0.05Eu3＋ at 614 rim, the color coordinates（0. 608, 0. 386）. The activation energy for thermal quenching was calculated that the value of AE was about 0. 138 eV obtained from the fitting results. Above all, SrSnO3： Eu3＋ can be a potential red emitting phosphor for NUV/blue pumped white LEDs.

关 键 词：光致发光 高温固相法 白光LED 锡酸锶荧光粉 稀土离子 

分 类 号：O644[理学—物理化学]