Enhanced photoluminescence of SiO2 coated CaTiO3:Dy3+,Li+ nanophosphors for white light emitting diodes

Dual substitution of host lattice ions to enhance the luminescence properties of Zn2TiO4:Cr3+ phosphor

“…From the refined data of ZLTN:0.005Cr 3+ , V = 608.37 Å 3 , N = 8, x c = 0.005. R c is 5 Å when the cause of concentration quenching was exchange interaction [48, 49]. The calculated R c value was 30.74 Å in ZLTN:0.005Cr 3+ .…”

“…The main reason for the intensity change was the concentration quenching effect. The following formula was used to analyze the cause of concentration quenching [46–48]: $$$$ {R}_c=2{\left(\frac{3V}{4{\pi x}_cN}\right)}^{\frac{1}{3}} $$$$ where, R c is the critical distance, V is the cell volume, x c is the optimum concentration of doping ions, and N is the number of replaceable sites in the unit cell. From the refined data of ZLTN:0.005Cr 3+ , V = 608.37 Å 3 , N = 8, x c = 0.005.…”

Organic pollutant degradation for micro-molecule product emission over SiO2 layers-coated g-C3N4 photocatalysts

“…5. 39,40 Fig. 5a presents the series of adsorption and degradation curves for the photocatalysts, where it could be seen that the adsorption efficiency (−20 min to 0 min) of g-C 3 N 4 was the worst among the investigated samples, and that the adsorption properties were improved with the increase in SiO 2 layers.…”

Realization of a green-emitting pyrosilicate-structured Er3+-activated Y2Si2O7 phosphor: a systematic study of opto-electronic characteristics and thermal stability for lighting applications

“…Approximately 20% of the world's electricity consumption is attributed to lighting. 3 Presently, white light-emitting diodes (WLEDs) have garnered considerable attention as next-generation solid-state lighting to substitute conventional lamps 4,5 owing to their notable advantages, including high energy efficiency, extended operational lifespan, compactness and eco-friendliness. 6,7 The current mainstream commercial white LEDs utilize a combination of blue InGaN-LED-chips and YAG:Ce 3+ yellow phosphors to produce white light.…”