On the fluorescence enhancement mechanism of Er3+ in germanate glass containing silver particles |
| |
Authors: | Li Xiang-Ping Chen Bao-Jiu Shen Ren-Sheng Zhang Jin-Su Sun Jia-Shi Cheng Li-Hong Zhong Hai-Yang Tian Yue Fu Shao-Bo Du Guo-Tong |
| |
Institution: | a Department of Physics, Dalian Maritime University, Dalian 116026, China;b School of Physics and Optoelectronic Engineering, Dalian University of Technology, Dalian 116024, China |
| |
Abstract: | The spectral properties of trivalent erbium ions (Er3+) are systematically studied in a melt-quenched germanate glass (60~GeO2-20PbO-10BaO-10K2O-0.1Ag2O) containing silver (Ag) particles. Thermal treatment of the material leads to the precipitation of Ag particles as observed by transmission electron microscopy and confirmed by absorption spectrum for the obvious surface plasmon resonance peak of Ag particles. The fluorescence from Er3+ in the 10-min-annealed sample with Ag particles is found to be 4.2 times enhancement compared with the unannealed sample excited by 488-nm Ar+ laser. A comparison is made between a spectral study performed on the unannealed Er3+-doped sample and the one annealed for 20~min. The data of absorption cross section and Judd-Ofelt intensity parameters show the agreement between the two samples no matter whether there are Ag particles, indicating that the introduction of Ag particles by post-heat treatment has no effect on the crystal field environment of Er3+ ions. And the fluorescence enhancement is attributed to the surface plasmon oscillations of Ag particles in germanate glass. |
| |
Keywords: | Er3+ silver particles fluorescence enhancement surface plasmon resonance |
本文献已被 CNKI 维普 等数据库收录! |
| 点击此处可从《中国物理 B》浏览原始摘要信息 |
| 点击此处可从《中国物理 B》下载免费的PDF全文 |