Author/Authors :
You، نويسنده , , Guanjun and Zhou، نويسنده , , Peng and Zhang، نويسنده , , Chun-Feng and Dong، نويسنده , , Zhiwei and Yang، نويسنده , , Feng and Du، نويسنده , , Zu-Liang and Chen، نويسنده , , Liang-Yao and Qian، نويسنده , , Shi-Xiong، نويسنده ,
Abstract :
The energy relaxation dynamics in Ag:Bi2O3 nanocomposite films with high density of Ag nanoparticles were investigated by femtosecond pump–probe technique. For the films with relatively low Ag concentration (13.2–35.7 at.%), the energy relaxation is nearly completed within 1 picosecond (ps) at moderate excitation regime. For the film with 52.0 at.% Ag concentration, the relaxation process consists of a fast power-dependent component (1–2 ps) and a long-lived one. The different relaxation characteristics are suggested to be resulted from the differences in the structural and thermal properties of the surrounding Bi2O3 matrix coupling with Ag nanoparticles.
