Morphology controllable and highly luminescent monoclinic LaPO4:Eu3+ microspheres

Abstract A facile, but effective, two-step method was developed to prepare monoclinic LaPO 4 :Eu 3+ microspheres composed of microprisms with a controllable morphology. XRD and SEM studies revealed a spherical morphology and crystalline structure for the resulting material. It was also found that LaPO 4 :Eu 3+ microspheres prepared at 800 °C showed a higher luminescent intensity than primary hexagonal LaPO 4 :Eu 3+ microprisms. Furthermore, the luminescent performance of LaPO 4 :Eu 3+ microspheres was demonstrated to reach the standards of the LaPO 4 :Eu 3+ bulk material under the same conditions. These results suggest possibilities for the use of as-synthesized monoclinic LaPO 4 :Eu 3+ microspheres as alternatives to replace intrinsically uneven bulk materials for many application areas, including light display systems and optoelectronic devices.