Study on luminous phosphor with improved luminous efficiency for plasma planar backlight

Abstract

Highly luminescent efficiency white-light phosphors have been successfully produced by microwave irradiation treatment. The SEM image and XRD analysis reveal that the surface morphology of the white-light phosphors can be notably modified by microwave irradiation from sheet-like into spherical shapes and exhibit with better crystalline property. The VUV PL spectra show that the microwave irradiation treatment can effectively enhance the luminescent efficiency by a factor of 1.5 times for intensity in comparison with that without microwave treatment. The improvement in all visible emission can he related to the modified surface morphology and increased crystalline properties of the white-light phosphors. These results demonstrate that such a simple approach can provide for the fabrication of highly luminescent efficiency phosphors for the optoelectronic devices.