Narrow-band red-emitting phosphor with negligible concentration quenching for hybrid white LEDs and plant growth applications
Kasturi Singh, Marikumar Rajendran, Rachna Devi, Sivakumar Vaidyanathan
Abstract
retain >80% of its emission intensity at 150 °C. The best red-emitting composition was integrated with near UV LED and obtained bright red emission with CIE x = 0.6647, y = 0.3357. White LED was fabricated by integrating the blue LED with yellow dye + red phosphor and white LED showed bright white light with CCT (5546 K), CIE (0.331, 0.385), and CRI (81%). In addition, the red LED spectrum is well-matched with the phytochrome (Pr) absorption spectrum and is useful for plant growth applications.
Topics & Concepts
PhosphorMonoclinic crystal systemQuenching (fluorescence)Absorption (acoustics)Context (archaeology)Analytical Chemistry (journal)Emission spectrumAbsorption spectroscopyLight-emitting diodeMaterials sciencePhotoluminescenceBlueshiftChemistryOptoelectronicsOpticsFluorescenceSpectral linePhysicsCrystallographyCrystal structureChromatographyBiologyAstronomyPaleontologyLuminescence Properties of Advanced MaterialsLuminescence and Fluorescent MaterialsAmmonia Synthesis and Nitrogen Reduction