Structural and optical investigations of new fluorophosphates solid solutions LixY1-yLny(PO4)1-xF4x (0 < x ≤ 0.4; Ln = Eu, Tb) as phosphors for solid-state lighting

Fluorescence regulation derived from Eu3+ in miscible-order fluoride-phosphate blocky phosphor

“…At present, the leading commercial WLED technology combines blue chips with yellow phosphor through epoxy resin or silica gel, but the lack of red-light component in yellow phosphor results in low color rendering index (CRI) [8][9][10][11]. In order to improve the CRI, rare earth (RE 3+ ) codoping is adopted to introduce the red component, but the subsequent cross relaxation between rare earth ions leads to the negative effect of photon release [12][13][14][15][16][17][18][19][20]. At the same time, the utilization of inorganic precursor glass as an encapsulant has attracted growing attention which has more advantages than organic resin such as excellent aging resistance and heat resistance.…”