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Citation: FU Xiao-Feng, ZOU Hua-Min, HAN Jun-Bo. Photo Oxidation of Ag/Titanium Oxide Nanoparticle Film Induced by Ultrafast Laser[J]. Acta Physico-Chimica Sinica, ;2007, 23(06): 940-944. doi: 10.3866/PKU.WHXB20070629 shu

Photo Oxidation of Ag/Titanium Oxide Nanoparticle Film Induced by Ultrafast Laser

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Department of Physics, Wuhan University, Wuhan 430072, P. R. China; Center for Electron Microscopy, Wuhan University, Wuhan 430072, P. R. China; Key Laboratory of Acoustic and Photonic Materials and Devices, Ministry of Education, WuHan University, Wuhan 430072, P. R. China

Received Date: 18 December 2006
Available Online: 29 April 2007

The films with Ag nanoparticles embedded in amorphous titanium oxide were successfully prepared by radio frequency magnetron sputtering method. The changes in size, shape, absorption, and binding energy of Ag nanoparticles irradiated with picosecond laser of 800 nm were studied. TEM images showed that Ag nanoparticles became smaller in size and more roundish in shape after irradiation. The optical absorption spectra indicated that the absorption was reduced in the wavelength range from 586 nm to 1200 nm, and increased at the wavelength range from 350 nmto 586 nm. The photoluminescence intensity was greatly enhanced after the samples had been irradiated, which was attributed to the Ag2Oformed by photo oxidation.
- Photo oxidation; Photoluminescence; Nanoparticle; Radio frequency magnetron sputtering
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