Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10653205 | Solid State Communications | 2005 | 5 Pages |
Abstract
Er3+-doped oxychloride germanate glasses have been synthesized by conventional melting and quenching method. Structural and thermal stability properties were obtained based on the Raman spectra and differential thermal analysis, indicating that PbCl2 plays an important role in the formation of glass network and has an important influence on the maximum phonon energy and thermal stability of host glasses. Intense green and red emissions centered at 525, 546, and 657Â nm, corresponding to the transitions 2H11/2â4I15/2, 4S3/2â4I15/2, and 4F9/2â4I15/2, respectively, were observed at room temperature. With increasing PbCl2 content, the intensity of green (525 and 546Â nm) emissions increases significantly, while the red (657Â nm) emission increases slowly. The results indicate that PbCl2 has more influence on the green emissions than the red emission in oxychloride germanate glasses. The possible upconversion luminescence mechanisms has also been estimated and discussed.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
Hongtao Sun, Junjie Yang, Liyan Zhang, Junjie Zhang, Lili Hu, Zhonghong Jiang,