Abstract The present paper summarises the synthesis of La3+ doped zinc oxide nanoparticles using Aloe vera gel by solution combustion method and the characterization using a powder X-ray diffractometer (PXRD), a transmission electron microscope (TEM), an X-ray photometric spectrometer (XPS), a Raman spectrometer and their applications in optical devices and latent fingerprinting. PXRD pattern confirms the crystallite size of La3+ doped ZnO varies from 13 to 20 nm. Crystallite size varies inversely with doping concentration. Photoluminescence properties are found to be the maximum for 2 mol% doping concentration. PL spectra extends the use of ZnO:La3+ nanoparticles in blue green LED. These nanoparticles also have superior property as a fluorescent labels in fingerprints.

中文翻译：

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镧掺杂氧化锌的绿色介导合成：研究其结构、光学和潜在指纹应用

摘要 本文综述了芦荟凝胶溶液燃烧法合成 La3+ 掺杂氧化锌纳米粒子，并采用粉末 X 射线衍射仪 (PXRD)、透射电子显微镜 (TEM)、X 射线光度计 ( XPS)、拉曼光谱仪及其在光学器件和潜在指纹识别中的应用。PXRD 图案证实了 La3+ 掺杂的 ZnO 的微晶尺寸在 13 到 20 nm 之间变化。微晶尺寸与掺杂浓度成反比。发现光致发光特性在 2 mol% 掺杂浓度下达到最大值。PL 光谱扩展了 ZnO:La3+ 纳米粒子在蓝绿色 LED 中的应用。这些纳米颗粒还具有作为指纹荧光标记的优越特性。