Near UV–blue emission from Ce doped Y2SiO5 phosphor

Cerium doped yttrium oxy-orthosilicate (Y2SiO5:Ce3+) phosphor was synthesized by modified solid state reaction method, which is low cost and useful for large scale production. A sample was characterized by X-ray diffraction (XRD) technique as well as field emission gun scanning electron microscopy. The crystallite size was calculated by Scherer׳s formula. The effect of Ce3+ concentration on photoluminescence studies was interpreted. The sample shows good PL spectra in the violet and blue region. The excitation spectra monitored at 400 nm and emission spectra monitored at 360 nm. The spectrophotometric determination was calculated by Commission Internationale de I’Eclairage technique. Using this phosphor, the desired CIE values including emissions throughout the violet (360 nm) and blue (427 nm) of the spectra were achieved. Efficient blue light emitting diodes were fabricated using Ce3+ doped phosphor based on near ultraviolet (NUV) excited LED lights.