Preparation of KMgF{sub 3} and Eu-doped KMgF{sub 3} nanocrystals in water-in-oil microemulsions
- College of Life Science, Dalian Nationalities University, Dalian 116600 (China)
- Department of Geosciences, Material Sciences Center, Philipps University, Hans-Meerwein-Strasse, D-35032 Marburg (Germany)
- Key Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022 (China)
In this study, KMgF{sub 3}:Eu{sup 2+} luminescent nanocrystals (NCs) were prepared in water/cetyltrimethylammonium bromide (CTAB)/2-octanol microemulsions. The KMgF{sub 3}:Eu{sup 2+} NCs were characterized by transmission electron microscopy (TEM), X-ray diffractometer (XRD), fluorescence spectrum, infrared spectroscopy (IR) and elementary analysis. The results showed that the size of the KMgF{sub 3}:Eu{sup 2+} NCs was hardly affected by water content and surfactant (CTAB) concentration. The emission spectrum showed that the position of the 362 nm peak is due to the K{sup +} sites substituted Eu{sup 2+}. Two emission peaks located at 589 and 612 nm can be attributed to Eu{sup 3+}, which exist at two different types of Eu{sup 3+} centers: one is Eu{sup 3+} at a K{sup +} site, the other is clustering of Eu{sup 3+} ions in the interstices of KMgF{sub 3} host lattice.
- OSTI ID:
- 21000587
- Journal Information:
- Materials Research Bulletin, Vol. 42, Issue 2; Other Information: DOI: 10.1016/j.materresbull.2006.06.004; PII: S0025-5408(06)00244-3; Copyright (c) 2006 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ABSORPTION SPECTROSCOPY
BROMIDES
CHEMICAL PREPARATION
DOPED MATERIALS
EMISSION SPECTRA
EUROPIUM IONS
FLUORESCENCE SPECTROSCOPY
INFRARED SPECTRA
LUMINESCENCE
MAGNESIUM FLUORIDES
MICROEMULSIONS
NANOSTRUCTURES
POTASSIUM FLUORIDES
POTASSIUM IONS
SURFACTANTS
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION
X-RAY DIFFRACTOMETERS