In this communication, we report the white light emitting Dy³⁺ ions doped Y₂MoO₆ (YMO) nanopowders (NPs) prepared via green combustion synthesis route by utilizing the Aloe vera (AV) gel as surfactant. For the convenient to the readers, we represent Y₂MoO₆:Dy³⁺ as YMOD. The cubic structure of the YMOD is confirmed by the results of powder X-ray diffraction (PXRD). The energy band gap values are studied by diffuse reflectance spectra (DRS) plots and the observed values are found to be in the range of 3.33–3.43 eV. The block-like structures of the fabricated nanopowders is analyzed by means of scanning electron microscope (SEM) images. Transmission electron microscope (TEM) images are castoff to evaluate the particle size of the prepared powders. The crystallinity and interplanar spacing are analyzed by means of selected area diffraction (SAED) and high-resolution TEM (HRTEM) images respectively. In order to study the luminescence behaviour of the fabricated powders, the photoluminescence spectra are recorded in the range of 400–675 nm under 386 nm excitation wavelength. There are three prominent peaks positioned at 480, 575 and 637 nm which are corresponding to the ⁴F_9/2 → ⁶H_15/2, _13/2 and _11/2 respectively. The direct current conductivity is studied in the temperature range from 30 to 400 °C. The DC conductivity of NPs increases with increase in temperature. The color emission of the fabricated powders is studied by means of color diagrams namely, CIE and CCT. It is noticed from the color diagrams that, the emission color lies in the bright white region (0.33, 0.33) which is a characteristic emission of the Dy³⁺ doped powders. The obtained CCT value (5426 K) indicates that the prepared powders can be effectively utilized for cool LED sources in the indoor lighting applications. The average color purity (CP) values are found to be 80%. The quantum efficiency of the prepared nanopowders is found to be ~86.82%. The above findings substantiate the ability of YMO: Dy³⁺ phosphor to be used in photovoltaic and display device applications.

在这篇通讯中，我们报告了利用芦荟(AV) 凝胶作为表面活性剂，通过绿色燃烧合成路线制备的白色发光 Dy ³⁺离子掺杂的 Y ₂ MoO ₆ (YMO) 纳米粉末 (NPs) 。为了方便读者，我们代表 Y ₂ MoO ₆ :Dy ³⁺作为 YMOD。YMOD 的立方结构由粉末 X 射线衍射 (PXRD) 的结果证实。通过漫反射光谱 (DRS) 图研究能带隙值，发现观察值在 3.33-3.43 eV 的范围内。通过扫描电子显微镜 (SEM) 图像分析制备的纳米粉末的块状结构。透射电子显微镜 (TEM) 图像被丢弃以评估制备的粉末的粒度。结晶度和晶面间距分别通过选区衍射 (SAED) 和高分辨率 TEM (HRTEM) 图像进行分析。为了研究制备的粉末的发光行为，在 386 nm 激发波长下记录了 400-675 nm 范围内的光致发光光谱。⁴ F _9/2  →  ⁶ H _15/2、_13/2和_11/2分别。在 30 到 400 °C 的温度范围内研究了直流电导率。NPs 的直流电导率随着温度的升高而增加。通过彩色图即 CIE 和 CCT 研究制造的粉末的颜色发射。从颜色图中可以看出，发射颜色位于亮白色区域（0.33, 0.33），这是 Dy ³⁺的特征发射掺杂粉末。获得的 CCT 值 (5426 K) 表明制备的粉末可以有效地用于室内照明应用中的冷 LED 光源。发现平均色纯度 (CP) 值为 80%。发现制备的纳米粉末的量子效率为~86.82%。上述发现证实了 YMO:Dy ³⁺磷光体用于光伏和显示设备应用的能力。