Pr³⁺:NaY(MoO₄)₂ crystals with dopant concentration from 0.1 to 1.5 mol% have been successfully grown by the vertical Bridgman method using spontaneous crystallization. The as-grown Pr³⁺-doped NaY(MoO₄)₂ crystals presented black-green color, and the annealed crystal samples presented transparency with faint green coloration. The mechanisms of eliminating color centers by thermal annealing are explained in detail. The Raman, absorption, emission spectra and fluorescence decay curves of Pr³⁺-doped NaY(MoO₄)₂ crystals were studied systematically. The concentration segregation coefficients of four crystal samples are maintained in the range of 1.1–1.6. The Judd-Ofelt parameters were calculated according to the measured absorption spectra. The emission spectra showed that when Pr³⁺-doped NaY(MoO₄)₂ crystals were excited at 475 nm, orange-red broadband emission (606–652 nm) with a strong dependence on the Pr³⁺ ion concentration could be observed. The emission cross-sections at 606 and 652 nm were calculated as 2.73 × 10⁻²⁰ and 2.03 × 10⁻²⁰ cm², respectively. And the possible processes of energy transfer between [MoO₄]^2- anion groups and Pr³⁺ ions are also discussed. The longest average decay time (τ = 43.59 μs) was obtained at 606 nm when the Pr³⁺ concentration is 0.1%. The excellent luminescence performance in the orange-red region indicates that the Pr³⁺-doped NaY(MoO₄)₂ crystals have potential applications in tunable orange-red laser.

通过自发结晶的垂直布里奇曼法成功地生长了掺杂剂浓度为0.1至1.5mol％的Pr ³⁺：NaY（MoO ₄）₂晶体。刚生长的掺Pr ^3+的NaY（MoO ₄）₂晶体呈现黑绿色，退火后的晶体样品呈现透明性，并带有淡绿色。详细说明了通过热退火消除色心的机理。掺Pr ^3+的NaY（MoO ₄）₂的拉曼光谱，吸收光谱，发射光谱和荧光衰减曲线对晶体进行了系统的研究。四个晶体样品的浓度偏析系数保持在1.1-1.6范围内。根据测得的吸收光谱计算Judd-Ofelt参数。发射光谱表明，当掺入Pr ^3+的NaY（MoO ₄）₂晶体在475 nm处激发时，可以观察到橙红色宽带发射（606-652 nm），其对Pr ³⁺离子浓度的依赖性很大。计算出在606和652nm处的发射截面分别为2.73×10 ^-20和2.03×10 ^-20  cm ²。以及[MoO ₄ ] ^2-之间的能量转移的可能过程还讨论了阴离子基团和Pr ³⁺离子。当Pr ³⁺浓度为0.1％时，在606 nm处获得最长的平均衰减时间（τ= 43.59μs）。橙红色区域的出色发光性能表明，掺Pr ^3+的NaY（MoO ₄）₂晶体在可调橙红色激光中具有潜在的应用。