DIRECT UPCONVERSION SENSITIZATION LUMINESCENCE OF Ho(0.1)Yb(5):OXYFLUORIDE VITROCERAMICS

• 来源期刊: 中国物理（英文版）
• 关键词: upconversion luminescence oxyfluoride vitroceramics Ho3+ ion
• 年，卷（期）: 2001,（12）
• 页码范围: 1163-1168
• 页数: 6页
• 语种: 英文

摘要

This paper studies the upconversion luminescence phenomenon of the Ho,Yb co-doped oxyfluoride vitroceramics.There is one group of strong upconversion luminescence lines positioned at 536.5nm, 18639cm-1; 540.5nm, 18501cm-1;544.0nm, 18399cm-1, which is easily identified as the transitions of 5S2 → 5Is. There are other splendid upconversion luminescence lines, which are 5S2 → 5I7, 5F5 → 5I8, 5G6 → 5Is, (5GaG)5 → 5I8, (3FaH5G)4 → 5I7, 5G4 → 5I8 and (5GaH)5 → 5I8. It is also found that an interesting kind of upconversion cooperative radiation fluorescence comes from a kind of coupling state of clusters consisting of two Yba+ ions.