Trivalent Dy doped TTB (tetragonal tungsten bronze) lead tantalate (PbTa₂O₆) phosphors were synthesized by the solid-state reaction route. Structural and spectroscopic properties have been carried out by x-ray diffraction (XRD), scanning electron microscopy–energy dispersive spectroscopy (SEM–EDS), photoluminescence (PL) and thermoluminescence (TL) analyses. XRD patterns of samples revealed the presence of TTB symmetry which continued up to 10 mol.%. SEM analysis showed the transformation of grain morphology from the shapeless-rounded to elongate. Strong PL emissions of PbTa₂O₆:Dy³⁺ phosphor were monitored at 480.5 nm and 578.5 nm. PL emission increased up to 7 mol.% and then decreased because of the concentration quenching. Decay times decreased with the increase of concentration and the end of the process (10 mol.%) fell to 355 μm. The energy transfer efficiency (η_ET) energy transfer rate (W) and quantum efficiency (η_QE) of the whole process were found as 56.25%, 1.581 ms^–1, and 20.27%, respectively. The CIE (Commission Internationale de l’Éclairage) coordinates of all phosphors have located close to the standard white light center, also the CIE coordinates (x, y) and CCT (correlated color temperature) value for 7 mol.% phosphor were found as (0.310, 0.295) and 6238 K, respectively. TL emissions of PbTa₂O₆:Dy³⁺ phosphor were monitored by four glow peaks in the range between 50°C and 400°C after x-ray irradiation. TL kinetic parameters were determined by the deconvolution of the 5 mol.% sample which has the highest glow curve intensity.

通过固相反应路线合成了掺三价do的TTB（四方钨青铜）钽酸铅（PbTa ₂ O ₆）荧光粉。结构和光谱性质已通过X射线衍射（XRD），扫描电子显微镜-能量色散光谱（SEM-EDS），光致发光（PL）和热致发光（TL）分析进行了分析。样品的XRD图谱表明存在TTB对称性，该对称性持续高达10mol。％。扫描电镜分析表明晶粒形态从无形状的圆形转变为细长形。PbTa ₂ O _6的PL排放很强：Dy ³⁺在480.5nm和578.5nm处监测荧光粉。PL排放增加至7 mol。％，然后由于浓度猝灭而减少。衰变时间随浓度的增加而减少，过程结束时（10摩尔％）降至355μm。能量转移效率（η _ET）的能量转移率（w ^）和量子效率（η _QE的整个过程）被发现为56.25％，1.581毫秒^-1分别和20.27％。所有荧光粉的CIE（国际照明委员会）坐标都位于标准白光中心附近，CIE坐标（x，y）和7 mol。％荧光粉的CCT（相关色温）值分别为（0.310，0.295）和6238K。在X射线照射后，通过在50°C至400°C之间范围内的四个辉光峰监控PbTa ₂ O ₆：Dy ³⁺荧光粉的TL发射。TL动力学参数由具有最高辉光曲线强度的5mol。％样品的去卷积确定。