Advanced polycrystalline ceramics are gaining importance on development of light‐emitting diodes, infrared detectors, solid‐state lasers, etc. The physical properties of these materials are dependent on variety of dopant concentrations. In this manuscript, we have synthesized Yb‐doped Y₂O₃ (Y_2‐xYb_xO₃) (x = 0.0, 0.02, 0.06, 0.1, 0.14) nanoparticles using co‐precipitation method. X‐ray diffraction patterns confirm the presence of cubic phase for pure Y₂O₃ nanoparticles and mixed phase (cubic + monoclinic) for Yb‐doped Y₂O₃ nanoparticles. The average crystallite size is found in the range 71 to 31 nm and lattice strain −1 × 10⁻⁴ to‐5 × 10⁻⁴ calculated using Debye‐Scherrer formula and Willimission‐Hall plot. The crystallite size decrease with dopant concentration upto x = 0.10 and material is found to exhibit compressive lattice strain. Field‐emission scanning electron microscopy shows agglomerated nanoparticles. The Fourier‐transform infrared spectroscopy confirms the presence of metal oxide functional groups (Y‐O and Yb‐O) and vibrational bands corresponding to O‐H vibration, C‐O bending, and stretching modes in the samples. The band gap energy (E_g) is found to decrease from 5.14 eV for x = 0.0 to 3.60 eV for x = 0.14 composition. The photolumincence spectra show characteristic blue and green emission at 486 nm for x = 0.10 and 525 nm for x = 0.0, respectively. The frequency‐dependent dielectric studies confirm the enhancement in dielectric constant with increase in Yb doping. These structural, morphological, optical, and electrical properties of Yb:Y₂O₃ nanoparticles are helpful for selecting this material as an appropriate candidate for laser host material for medical imaging and display devices applications.

中文翻译：

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共沉淀法合成的Y2-xYbxO3纳米粒子的结构，形态和光电性质

先进的多晶陶瓷在发光二极管，红外探测器，固态激光器等的开发中正变得越来越重要。这些材料的物理特性取决于各种掺杂剂浓度。在本手稿中，我们使用共沉淀法合成了掺Yb的Y ₂ O ₃（Y _2-x Yb _x O ₃）（x = 0.0，0.02，0.06，0.1，0.14）纳米粒子。X射线衍射图证实纯Y ₂ O ₃纳米粒子存在立方相，掺Yb的Y ₂ O ₃存在混合相（立方+单斜晶）纳米粒子。发现平均晶粒尺寸在71至31 nm的范围内，并且使用Debye-Scherrer公式和Willimission-Hall图计算出的晶格应变-1×10 ^-4至-5×10 ^-4。随着掺杂剂浓度达到x = 0.10，微晶尺寸减小，并且发现材料表现出压缩晶格应变。场发射扫描电子显微镜显示了团聚的纳米颗粒。傅里叶变换红外光谱证实了样品中存在金属氧化物官能团（Y-O和Yb-O）以及对应于O-H振动，C-O弯曲和拉伸模式的振动带。带隙能量（E _g发现）从x ＝ 0.0的5.14eV降低到x ＝ 0.14的3.60eV。光致发光光谱在x = 0.10时在486 nm处显示出特征性的蓝色和绿色发射，对于x = 0.0而言，在525 nm处显示出特征性的蓝色和绿色发射。随频率变化的介电研究证实，随着Yb掺杂的增加，介电常数会增加。Yb：Y ₂ O ₃纳米粒子的这些结构，形态，光学和电学性质有助于选择该材料作为医学成像和显示设备应用的激光主体材料的合适候选材料。