Synthesis of LaF3:Er,Yb/LaF3 core/shell nanocrystals for potential optical amplifiers application

摘要：

Organic ligands modified LaF3:Er,Yb nanocrystals (NCs) and LaF3:Er,Yb/LaF3 core/shell nanocrystals have been prepared, which have wonderful dispersibility in non-polar organic solvents such as toluene, cyclohexane and chloroform. The resulting NCs show strong emission around the 1550 nm telecommunication window when excited at 974 nm in room temperature. The luminescence intensity of LaF3:Er,Yb/LaF3 core/shell nanocrystals is stronger than that of LaF3: Er,Yb nanocrystals, and the photoluminescence lifetime is longer than LaF3: Er,Yb nanocrystals. Using a double exponential decay functions fit, a longer lifetime is about 150μs. NCs synthesized by this method eliminate O-H effect, and can be incorporated with some low-loss polymer produces a promising candicate for waveguide amplifiers operating at 1550nm.

关键词： LaF3:Er Yb nanocrystals core/shell NIR luminescence polymer-based erbium-doped waveguide amplifiers(EDWA)

作者: 薄淑晖 汪琦 甄珍 刘新厚

作者单位: 中国科学院理化技术研究所有机光功能材料与分子工程学重点实验室,北京,100080;中国科学院研究生院,北京,100049 中国科学院理化技术研究所有机光功能材料与分子工程学重点实验室,北京,100080

会议类型: 国际会议

会议名称: 第六届中国国际纳米科技研讨会

会议地点: 成都

会议语种:英文

在线出版日期: 2007-11-19（万方平台首次上网日期，不代表论文的发表时间）