Radioluminescence (RL) behaviour of erbium-doped yttria nanoparticles (Y₂O₃:Er³⁺ NPs) which were produced by sol-gel method was reported for future scintillator applications. NPs with dopant rates of 1at%, 5at%, 10at% and 20at% Er were produced and calcined at 800°C, and effect of increased calcination temperature (1100°C) on the RL behaviour was also reported. X-ray diffraction (XRD) results showed that all phosphors had the cubic Y₂O₃ bixbyite-type structure. The lattice parameters, crystallite sizes (CS), and lattice strain values were calculated by Cohen-Wagner (C-W) and Williamson-Hall (W-H) methods, respectively. Additionally, the optimum solubility value of the Er³⁺ dopant ion in the Y₂O₃ host lattice was calculated to be approximately 4at% according to Vegard’s law, which was experimentally obtained from the 5at% Er³⁺ ion containing solution. Both peak shifts in XRD patterns and X-ray photoelectron spectroscopy (XPS) analyses confirmed that Er³⁺ dopant ions were successfully incorporated into the Y₂O₃ host structure. High-resolution transmission electron microscopy (HRTEM) results verified the average CS values and agglomerated NPs morphologies were revealed. Scanning electron microscopy (SEM) results showed the neck formation between the particles due to increased calcination temperature. As a result of the RL measurements under a Cu K_α X-ray radiation (wavelength, λ = 0.154 nm) source with 50 kV and 10 mA beam current, it was determined that the highest RL emission belonged to 5at% Er doped sample. In the RL emission spectrum, the emission peaks were observed in the wavelength ranges of 510–575 nm (²H_11/2, ⁴S_3/2-⁴I_15/2; green emission) and 645–690 nm (⁴F_9/2-⁴I_15/2; red emission). The emission peaks at 581, 583, 587, 593, 601, 611 and 632 nm wavelengths were also detected. It was found that both dopant rate and calcination temperature affected the RL emission intensity. The color shifted from red to green with increasing calcination temperature which was attributed to the increased crystallinity and reduced crystal defects.

据报道，通过溶胶-凝胶法制备的掺-氧化钇纳米颗粒（Y ₂ O ₃：Er ³⁺ NPs）的放射发光（RL）行为可用于未来的闪烁体应用。产生了掺杂率为1at％，5at％，10at％和20at％Er的NP，并在800°C下煅烧，并且还报道了煅烧温度（1100°C）升高对RL行为的影响。X射线衍射（XRD）结果表明，所有荧光粉均具有立方Y ₂ O _3的方铁矿型结构。分别通过Cohen-Wagner（CW）和Williamson-Hall（WH）方法计算晶格参数，微晶尺寸（CS）和晶格应变值。另外，Er ³⁺的最佳溶解度值根据Vegard定律，Y ₂ O ₃主晶格中的掺杂离子约为4at％，这是从含5at％Er ³⁺离子的溶液中通过实验获得的。XRD图谱的峰位移和X射线光电子能谱（XPS）分析都证实Er ³⁺掺杂离子已成功地掺入Y ₂ O ₃主体结构中。高分辨率透射电子显微镜（HRTEM）结果验证了平均CS值和凝聚的NPs形态被揭示。扫描电子显微镜（SEM）结果表明，由于煅烧温度升高，在颗粒之间形成了颈状结构。作为在Cu K下的RL测量的结果_α的X射线辐射（波长λ = 0.154纳米）源50千伏及10毫安束电流，它被确定最高RL发射属于5原子％掺铒样品。在RL发射光谱中，在510-575 nm（² H ₁₁ / ^2，4 S ₃ / ^2-4 I _15/2 ;绿色发射）和645-690 nm（⁴ F ₉ / ^2-4我_15/2; 红色发射）。还检测到在581、583、587、593、601、611和632 nm波长处的发射峰。发现掺杂速率和煅烧温度均影响RL发射强度。随着煅烧温度的升高，颜色从红色变为绿色，这归因于结晶度的增加和晶体缺陷的减少。