Spectroscopic characterizations and investigation of Judd-Ofelt intensity parameters of Dy3+-doped Ba2La8(SiO4)6O2 near white light emitting phosphor

Synthesis, photoluminescence, Judd–Ofelt analysis, and thermal stability studies of Dy3+-doped BaLa2ZnO5 phosphors for solid-state lighting applications

“…For the optimal doping concentration, these coordinates approximately match the National TV Standards Committee (NTSC) standards ( x = 0.333, y = 0.0333) and are in accord with the available literature. 8,19,32 These findings suggest that the as-synthesized phosphor materials can be suitable for the generation of UV-excited warm white light emission.…”

“…It was observed that all the curves were not following the single exponential trend, which can be attributed to the unequal distribution of dopant ions in the host matrix. 19 Thus, the decay curves were fitted by the double exponential function: 56 I ( t ) = I o + A 1 exp − t / τ 1 + A 2 exp − t / τ 2 In the above eqn (12) , I ( t ) represents emission intensity at some time ( t ), I o represents the background intensity, A 1 and A 2 are constants, and τ 1 and τ 2 correspond to lifetimes for different decays, respectively. The average lifetime was calculated using the following equation: …”

“…Thus, the optimization of the bands (Y and B) results in the generation of effective white light. 18,19…”

“…Thus, the optimization of the bands (Y and B) results in the generation of effective white light. 18,19 For the generation of white light, different varieties of host matrices have been explored, such as phosphates, oxides, sulfates, aluminates, vanadates, etc. [20][21][22][23][24][25][26] Amongst all the mentioned host matrices, oxide hosts are considered to be the most important because of their characteristic features like stable crystal structure, ease of synthesis, economical, increased tensile strength, high chemical and thermal stability, moisture resistance, and most importantly, their eco-friendly nature.…”

Cool green-emissive Y2Si2O7:Tb3+ nanophosphor: auto-combustion synthesis and structural and photoluminescence characteristics with good thermal stability for lighting applications

“…The relationship between log( I / x ) and log( x ) for YPS:Tb 3+ nanophosphors was evaluated using eqn (5) below. 42 …”