AI Article Synopsis
- Selective doping of Ni in nanocrystals embedded in glass-ceramics significantly enhances near-infrared emission, achieving a broad emission range with a FWHM of 288 nm.
- A comparison reveals that Ni-doped ZnGaO glass-ceramics show the best luminescence properties over other materials tested.
- The study suggests that using a TiO nucleating agent improves luminescence intensity and stability, making these materials viable for fiber amplifiers with good thermal treatment tolerance.
Article Abstract
Selective doping of Ni in octahedral sites provided by nanocrystals embedded in glass-ceramics (GCs) is crucial to the enhancement of broadband near-infrared (NIR) emission. In this work, a NIR emission with a full-width-at-half-maximum (FWHM) of 288 nm is first reported from ZnGaO: Ni nano-spinels embedded GCs with excellent transparency. A comparison is made of the NIR luminescence properties of Ni doped GCs containing ZnGaO, germanium-substituted ZnGaO nano-spinels (Zn Ga Ge O), and ZnGeO/LiGeO composite nanocrystals that are free of Ga. The results show that ZnGaO: Ni GCs exhibit a significantly enhanced NIR emission. The incorporation of the nucleating agent TiO is favored in terms of the increased luminescence intensity and prolonged lifetime. The possible causes for the enhancement effect are identified from the crystal structure/defects viewpoint. The newly developed GCs incorporate good reproducibility to allow for a tolerance of thermal treatment temperature and hence hold great potential of fiberization via the recently proposed "melt-in-tube" method. They can be considered as promising candidates for broadband fiber amplifiers.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5431766 | PMC |
| http://dx.doi.org/10.1038/s41598-017-01676-6 | DOI Listing |
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