A green light emissive LaSr <sub>2</sub> AlO <sub>5</sub> :Er <sup>3+</sup> nanocrystalline material for solid state lighting: crystal phase refinement and down-conversion photoluminescence with high thermal stability
Pawan Kumar, Devender Singh, Harish Kumar
Abstract
sample were collected in the range 298-498 K. The considered phosphor was found to have a high thermal stability as evidenced by the luminous intensity being sustained at 74.29% at 498 K compared to the intensity at ambient temperature (298 K) with an activation energy of 0.1453 eV. The calculated color purity and superb chromaticity coordinates indicates that the phosphors have a high degree of color purity, which further supports its applicability as a green component in solid-state lighting.
Topics & Concepts
PhosphorPhotoluminescenceNanocrystalline materialGreen-lightMaterials scienceSolid-state lightingPhase (matter)ThermalDopingCrystal (programming language)Solid-stateLuminous efficacyCrystal structureAnalytical Chemistry (journal)Chemical engineeringOptoelectronicsLight-emitting diodeChemistryCrystallographyNanotechnologyPhysical chemistryPhysicsBlue lightThermodynamicsOrganic chemistryProgramming languageLayer (electronics)Computer scienceChromatographyEngineeringLuminescence Properties of Advanced MaterialsPerovskite Materials and ApplicationsAdvanced Photocatalysis Techniques