透明上转换氟碳树脂纳米复合涂层的制备及性能

Preparation and properties of transparent upconversion fluorocarbon resin nanocomposite coatings

选择溶剂型的氟碳树脂和质量分数为3%、5%和10%的β-NaYF4:Yb,Tm上转换纳米颗粒为前驱体,通过浸渍提拉法在空白玻璃基片上制备具有透明和上转换发光功能的复合涂层。结果表明:氟碳树脂的最佳成膜温度为20℃;β-Na YF4:Yb,Tm上转换纳米颗粒能均匀地分散在氟碳树脂涂层;随着上转换纳米颗粒质量分数的增加,该复合涂层的荧光强度逐渐增加,但透过率逐渐下降;在980 nm波长激光器的激发下,肉眼能观察到蓝色的光,该复合涂层能发射出346、360、452、474、540、645和692 nm波长的光,且分析了其发光机制。

To obtain transparent and upconversion luminescence nanocomposite coatings,solvent-based fluorocarbon resin andβ-NaYF4 ∶Yb,Tm nanoparticles with different solid contents of 3％,5％ and 10％ were used as a precursor to deposite on the blank glass slide by dip-coating method.Results showed that the optimal film forming temperature for fluorocarbon resin coatings was 20 ℃;theβ-NaYF4 ∶ Yb,Tm nanoparticles were dispersed in the coatings.It was found that the luminescence intensity of the nanocomposite coatings increased as the increasing of solid content,but the transparency of the nanocomposite coatings decreased.The nanocomposite coatings showed 346,360,452,474,645 and 692 nm emissions under 980 nm laser excitation,and the luminescence mechanism was analyzed with the investigation of the physical properties of these nanocomposites.