Review— On the Development of Phosphors for Luminescent Materials: Synthesis, Characterization, Applications and Evolution of Phosphors as White-Light-Emitting Diodes

Abstract

The manuscript focuses on the concept of nano-phosphors, a remarkable type of material that has been widely explored because of their diverse promising applications. Progress in the development of such nano-phosphors as luminescent materials has received significant research attention. The white-light-emitting diodes (WLEDs) have grown dramatically and represent the most intriguing lighting source of the twenty-first century. The contribution of rare-Earth (RE) ions to lighting technology is explicitly addressed. The additional physical characteristics of white light that are addressed in the present manuscript comprise the correlated color temperature (CCT), the color rendering index (CRI), and the Commission International de’ Eclairage (CIE) chromaticity coordinates. Multiple synthesis methods employed around the globe to produce such industrially important nano-phosphors along with more specialized and impactful techniques to characterize all such materials are thus thoroughly explored. Also, the various technologically significant applications of these materials are described. The evolution of these potentially suitable luminescent materials for WLEDs and their white-light characteristics is also outlined. The manuscript presents a comprehensive overview of the advancement and innovation of nano-phosphors, their application fields and the significant milestones of artificial lighting toward modernization.

Optical and photoluminescence properties of trivalent rare earth ions doped LiMgPO4

“…These characteristics make them promising candidates for WLED innovation [7,8]. Numerous orthophosphate-based phosphors, injected with RE 3+ -activated ions using various synthetic techniques have been synthesized including LiMgPO 4 :Eu 3+ , NaCaPO 4 :Sm 3+ , NaCaPO 4 :Sm 3+ , Eu 3+ , NaSrPO 4 : Eu 3+ and KBaPO 4 :Sm 3+ [9-13] etc Trivalent RE 3+ -ions are a momentous material category that significantly impacts the field of white lighting technology [14,15].…”

Engineering linkers to regulate solid-state emission of spirodifluorene-based conjugated porous polymers for white light-emitting devices

“…Light-emitting diodes (LED) are a new generation of light source with a wide range of applications in the fields of solid-state lighting, full-color display, and other areas due to advantages, such as environmental friendliness, energy efficiency, long lifetime, and low power consumption. 1–3 Among them, white light-emitting diodes (WLEDs) constructed by the composition of light-conversion materials and ultraviolet or blue-emitting LED chips are the most widely used LEDs, 4 in which the light-conversion material is the key factor affecting the performance of WLEDs. Light-conversion materials are mainly divided into inorganic 5 and organic materials.…”