MICROSTRUCTURE AND OPTICAL PROPERTIES OF ERBIUM DOPED SILICA-BASED FILMS VIA FLAME HYDROLYSIS DEPOSITION AND AEROSOL DOPING
Silica-based films on Si fabricated by flame hydrolysis deposition were doped with erbium ions using an aerosol doping technique, and co-doped with GeO2, P2O5 and B2O3. The erbium solution concentration was varied from 4 to 8wt％. The results show that the refractive index of the films is not changed with erbium addition and no OH group is detected for erbium doped silica-based films. An obvious peak was observed at 1.542 μm with the FWHM of 65 nm, which corresponds to the 4I13/2 →4I15/2 transition. With the increase of Er solution concentration, the photoluminescence (PL) intensity first increases, then decreases above 6wt％ Er solution concentration. The decrease in PL intensity with concentration is attributed to concentration quenching caused by Er-Er interaction. The dependence of PL intensity on pump power intensity further confirms the concentration quenching is cooperative upconversion.
Erbium flame hydrolysis deposition photoluminescence cooperative upconversion
JIEHE SUI HAIBO WANG WEI CAI
School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, Peoples Republic of China
国际会议
第五届先进材料与加工国际会议(Fifth International Conference on Advanced Materials and Processing ICAMP-5)
哈尔滨
英文
1873-1878
2008-09-03（万方平台首次上网日期，不代表论文的发表时间）