Study on mechanism of increase in fluorescence intensity of nanoparticles by irradiation of laser and engineering applications

在本项目中，我们研究了激光辐照对纳米颗粒光学性质的改善及其应用。主要研究结果如下：(1)激光辐照提高纳米氧化锌荧光强度的机理是通过激光光化学合成的高晶态氧化锌薄膜钝化了纳米氧化锌表面的缺陷，提高了纳米颗粒的荧光强度。(2)通过表面钝化提高了各种纳米颗粒的光学性能。(3)成功地实现了高功能化纳米颗粒的快速制备，这对工程应用具有重要意义。

In this project, we have studied the improvement of optical properties of nanoparticles by the irradiation of laser and their applications. We have obtained the following results.(1) The mechanism of increase in fluorescence intensity of ZnO nanoparticles by the irradiation of laser was that the passivation of surface defects on ZnO nanoparticles by highly crystalline ZnO layer which was synthesized photochemically with the irradiation of laser increased fluorescence intensity.(2) The optical properties of various nanoparticles were improved by the surface passivation.(3) The rapid preparation of highly functionalized nanoparticles which was important for engineering applications was successfully done.