Abstract The precursor was prepared by citrate sol-gel combustion method, and the nanocrystals were calcined at high temperature. The morphology and structure of the material were characterized by scanning electron microscope (SEM), X-ray diffraction (XRD) and Fourier Transform Infrared Spectrometer (FTIR). The reflectance of the sample material was tested by UV-Vis NIR spectrophotometer (UVPC). The results showed that the sample material was nanocrystal, the particle size was uniform, and agglomerated to form microparticles. The material with the highest reflectance at 1064 nm wavelength was 54.58% of SmB0.5Al0.5O3 material, and the reflectivity of the powder with the lowest reflectivity at the wavelength of 1064 nm was 43.36% of that of SmB0.3Al0.7O3. Among them, the lowest reflectance at 1060–1090 nm was 32.65% at 1080 nm of SmBO3.

中文翻译：

---

硼和铝掺杂对钐化合物反射率的影响

摘要 采用柠檬酸盐溶胶-凝胶燃烧法制备前驱体，并在高温下煅烧纳米晶。通过扫描电子显微镜(SEM)、X射线衍射(XRD)和傅里叶变换红外光谱仪(FTIR)对材料的形貌和结构进行了表征。样品材料的反射率通过紫外-可见近红外分光光度计（UVPC）测试。结果表明，样品材料为纳米晶，粒径均匀，团聚形成微粒。1064nm波长反射率最高的材料为SmB0.5Al0.5O3材料的54.58%，1064nm波长反射率最低的粉体的反射率为SmB0.3Al0.7O3的43.36%。其中，SmBO3 在 1080 nm 处 1060-1090 nm 的最低反射率为 32.65%。