Synthesis of Red-Emissive CaV2O6 Nanophoshor via a Water Assisted Solid State Reaction Method

Monoclinic CaV2O6 (under 100 nm in diameter) phosphor was obtained via a water-assisted solid-state reaction (WASSR) method at 80 degrees C-120 degrees C and exhibited red emission at room temperature. The estimated average particle size, ratio of the V5+ ion (the emission center) in the structure, and optical properties were investigated through scanning electron microscopy, X-ray photoelectron spectroscopy, electron spin resonance spectroscopy, UV-vis spectroscopy, and fluorophotometric analysis. The average size of the particles obtained using the WASSR method was less than 100 nm. Compared with CaV2O6 obtained using the conventional solid-state reaction method, the amount of V5+ in CaV2O6 was 16% higher and the emission intensity was 1.4-fold higher by using the WASSR method.

Automated summary

Monoclinic CaV2O6 phosphor with red emission was successfully obtained via the water-assisted solid-state reaction method, showing a higher V5+ content and emission intensity compared to the conventional method.