Abstract
Stable CaMoO 4 spherulites were synthesized by a facile hydrothermal method using (NH 4) 6Mo 7O 24·4H 2O as a Mo source and these spherulites were formed according to the theoretical predictions of the crystal splitting theory. Rietveld refinement and photoluminescence studies confirmed that the CaMoO 4 spherulites are defect-free. The CaMoO 4 spherulites showed greenish-blue emission and the single emitting component of CaMoO 4:Eu 3+ spherulites led to a novel excitation induced efficient emission property like organic light emitting diodes. Cathodoluminescent properties of the CaMoO 4:Eu 3+ exhibited individual emissions from MoO 4 2- clusters and Eu 3+ ions. The white color emissions were clearly explained using Gaussian fitting curves. The corresponding CIE chromaticity coordinates provided their emission potentiality in the green, red and white regions for optical and biological applications.
Original language | English |
---|---|
Pages (from-to) | 15562-15569 |
Number of pages | 8 |
Journal | Journal of Materials Chemistry |
Volume | 22 |
Issue number | 31 |
DOIs | |
State | Published - 21 Aug 2012 |