Comprehensive studies of the Ag + effect on borosilicate glass ceramics containing Ag nanoparticles and Er-doped hexagonal NaYF 4 nanocrystals: morphology, structure, and 2.7 μm emission

Nanophotonics

article

Qunhuo Liu¹  Ying Tian¹  Wenhua Tang¹  Xufeng Jing²  Junjie Zhang¹  Shiqing Xu¹ 

[1] College of Materials Science and Engineering, China Jiliang University;Institute of Optoelectronic Technology, China Jiliang University

关键词: Ag nanoparticles;    glass and glass ceramic;    glass structure;    mid-infrared emission;   

DOI  :  10.1515/nanoph-2018-0024

学科分类：社会科学、人文和艺术（综合）

来源: De Gruyter

【 摘 要 】

In this work, we have performed a comprehensive investigation of the Ag + concentration effect on the morphological, thermal, structural, and mid-infrared emission properties of novel oxyfluoride borosilicate glasses and glass ceramics containing both Ag nanoparticles and erbium-doped hexagonal NaYF 4 nanocrystals. The effect of Ag + ions on the glass forming and crystallization processes was discussed in detail by glass structural analysis. It was found that the Ag + concentration can affect the distribution of Na + ion and bridge oxygen in boron-rich and silicon-rich phases, which induced the transformation between BO 3 triangles and BO 4 tetrahedra during crystallization process. In addition, there was a turning point when the doped Ag + ion concentration reached its solubility in the borosilicate glass. Furthermore, the enhancement of the 2.7 μm emission and the reduction of the lifetime of the 4 I 13/2 level were observed both in glasses and in glass ceramics, and its origin was revealed by qualitative and quantitative analyses of the Er 3+ -Ag nanoparticles (localized electric field enhancement) and Er 3+ -Er 3+ (nonradiative resonance energy transfer) interactions within glasses and glass ceramics. Moreover, the high lifetime of the 4 I 11/2 level (2.12 ms) and the peak emission cross section in 2.7 μm (6.8×10 −21 cm 2 ) suggested that the prepared glass ceramics have promising mid-infrared laser applications.

【 授权许可】

CC BY