State Key Laboratory of Materials-Orient Chemical Engineering, College of Materials Science and Engineering, Nanjing University of Technology, Nanjing 210009, PR China.
J Colloid Interface Sci. 2012 Jun 15;376(1):34-9. doi: 10.1016/j.jcis.2012.02.047. Epub 2012 Mar 6.
Monodisperse oleic acid stabilized pure NaYF(4) nanoparticles with controlled size and shape have been successfully synthesized by changing the initial reaction temperature. Transparent nanocomposite thin films consisting of NaYF(4):Yb, Er (Tm) upconverting nanoparticles (UCNPs) and fluorocarbon resin (FC) are deposited on the slide glass by dip-coating method. The results show that these nanocomposite thin films exhibit intense green and blue upconversion photoluminescence under 980 nm laser excitation and higher transparency than blank substrate. The NaYF(4):Yb,Er (Tm) nanoparticles and NaYF(4):Yb,Er (Tm)/FC nanocomposite thin films have been characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), scanning electron microscopy (SEM), SEM/back-scattered electron (BSE), atomic force microscopy (AFM), UV-Vis spectrophotometer (UVPC), and photoluminescence (PL) spectra. These nanocomposite thin films can be potentially used in solar cells field.
通过改变初始反应温度，成功合成了具有可控尺寸和形状的单分散油酸稳定的纯 NaYF(4)纳米粒子。通过浸涂法将由 NaYF(4):Yb、Er(Tm)上转换纳米粒子(UCNPs)和氟碳树脂(FC)组成的透明纳米复合薄膜沉积在载玻片上。结果表明，这些纳米复合薄膜在 980nm 激光激发下表现出强绿光和蓝光上转换光致发光，并且比空白基底具有更高的透明度。通过 X 射线衍射(XRD)、场发射扫描电子显微镜(FESEM)、扫描电子显微镜(SEM)、SEM/背散射电子(BSE)、原子力显微镜(AFM)、紫外可见分光光度计(UVPC)和光致发光(PL)光谱对 NaYF(4):Yb、Er(Tm)纳米粒子和 NaYF(4):Yb、Er(Tm)/FC 纳米复合薄膜进行了表征。这些纳米复合薄膜在太阳能电池领域有潜在的应用。
