Microstructure and UV Fluorescence of Amorphous I/Au Composite Nanofilms Based on LVDCS Method

The amorphous I/Au composite nanoflms were prepared by low vacuum direct current sputtering (LVDCS) method. The optimized preparation technologies contain growth pressure, time, gaseous environment and annealing conditions. The maximum fuorescence emission ( λ em max ) of I/Au nanoflms was observed at wavelength of 375 nm, and the intensity of fuorescence emission peak of annealed I/Au flms was smaller than that of unannealed one due to fewer amorphous Au nanoparticles, caused by annealing treatment. In the UV-Vis absorption spectra, the intensity of UV-Vis absorption peak of annealed I/ Au nanoflms is larger than that of the unannealed one. This work also developed a new way to grow I/Au composite fuorescent thin flms.