Effect of EDTA on the formation and upconversion of NaYF_4:Yb^3+/ Er^3+
| Autor: | Xia Li, Ruisen Zhou |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Materials science
Photoluminescence Scanning electron microscope Nanotechnology 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Photon upconversion Hydrothermal circulation 0104 chemical sciences Electronic Optical and Magnetic Materials Nanocrystal X-ray crystallography 0210 nano-technology Luminescence High-resolution transmission electron microscopy Nuclear chemistry |
| Zdroj: | Optical Materials Express. 6:1313 |
| ISSN: | 2159-3930 |
| DOI: | 10.1364/ome.6.001313 |
| Popis: | NaYF4:Yb3+/Er3+ nanocrystals were prepared using a hydrothermal method. The products were characterized by XRD, SEM, TEM, HRTEM, and photoluminescence (FL). The XRD results indicated that the sample’s phase transformed from cubic to hexagonal when EDTA was added at low reaction temperatures. The SEM results revealed that the products were transformed from granular to rod-shaped with an increase in temperature. TEM images revealed the diameter of sample prepared at 120°C is about 10-50nm. HRTEM showed that crystals prepared at 120°C grew along {111} surfaces. The PL results indicated that samples prepared at 180°C without EDTA have the strongest luminescence property. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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