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首页> 外文期刊>RSC Advances >Synthesis of a NaYF4:Yb,Er upconversion film on a silicon substrate and its tribological behavior
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Synthesis of a NaYF4:Yb,Er upconversion film on a silicon substrate and its tribological behavior

机译：NaYF4：Yb，Er上转换膜在硅衬底上的合成及其摩擦学行为

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In this work, amino-functionalized NaYF4:Yb, Er upconversion nanoparticles (UCNPs) were synthesized by a hydrothermal method. Then a simple self-assembly method was carried out to prepare a NaYF4:Yb, Er upconversion (UC) film on a silicon (Si) substrate, using gamma-(2,3-epoxypropoxy)propyltrimethoxysilane (KH-560) as an intermediate coupling agent. The chemical composition and surface morphology of the UC film were characterized using X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FT-IR), water contact angle (WCA), and scanning electron microscopy (SEM) measurements. Furthermore, the tribological properties of the UC film were investigated by a UMT tester. The results indicate that the UC film has been successfully prepared on the Si substrate by the formation of chemical bonds and its lifetime is about five times longer than that of the NaYF4:Yb, Er UCNPs on a bare Si substrate. This work provides a facile way to synthesize a NaYF4:Yb, Er UC film with robust adhesion to the substrate, which can be applicable for other UC films.
机译：在这项工作中，通过水热法合成了氨基官能化的NaYF4：Yb，Er上转换纳米颗粒（UCNPs）。然后进行简单的自组装方法，以γ-（2,3-环氧丙氧基）丙基三甲氧基硅烷（KH-560）为中间体，在硅（Si）衬底上制备NaYF4：Yb，Er上转换（UC）膜。偶联剂。使用X射线光电子能谱（XPS），傅立叶变换红外光谱（FT-IR），水接触角（WCA）和扫描电子显微镜（SEM）测量来表征UC膜的化学成分和表面形态。此外，通过UMT测试仪研究了UC膜的摩擦学性能。结果表明，已经通过化学键的形成在硅衬底上成功制备了UC膜，其寿命是裸Si衬底上NaYF4：Yb，Er UCNPs寿命的五倍左右。这项工作为合成NaYF4：Yb，Er UC膜提供了一种简便的方法，该膜对基底具有牢固的粘合性，可用于其他UC膜。

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