Novel low temperature synthesis of Y2-x 03 :Eux 3+ nanophosphor prepared by combustion with Thioglycerol as fuel for near UV light emitting diodes (n-UVLEDs).

Abstract

Luminescent materials used in flat panel displays (FPD), compact fluorescent lamps (CFL), and light-emitting diodes (LEDs) require high purity, uniform particle size, clean surfaces, spherical shape, and dense morphology to ensure long-term stability. Y2 O3 :Eu3+ is a widely studied red phosphor known for its characteristic photoluminescence emission at 613 nm with near-UV excitation at 392 nm. Many synthesis methods have been explored to achieve Y2 O3 :Eu3+ nanoparticles with exceptional purity, consistent phases, and uniform particle sizes. The goal is to obtain particles with pristine surfaces, spherical shape, and compact morphology. This study focuses on the low-temperature synthesis and photoluminescence investigation of Y2-x O3 :Eux 3+ nanophosphors prepared using combustion with thioglycerol as a fuel. The results are compared with Y2-x O3 :Eux 3+ red nanophosphors synthesized using wet chemical and nitrate combustion methods. The photoluminescence characteristics of the Y2-x O3 :Eux 3+ nanophosphors were analyzed using PL emission spectroscopy, XRD, and scanning electron microscopy (SEM). These findings highlight the advantageous properties of the synthesized nanophosphors, such as their suitability for solid-state lighting applications in the lamp industry as highly efficient red phosphors. The combination of high purity, uniform particle size, clean surfaces, spherical shape, and dense morphology contributes to their potential for long-term stability and reliable performance in lighting devices.