Morphology controllable and highly luminescent monoclinic LaPO sub(4):Eu super(3+) microspheres

A facile, but effective, two-step method was developed to prepare monoclinic LaPO sub(4):Eu super(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 sub(4):Eu super(3+) microspheres prepared at 800 [degrees]C showed a higher luminescent intensity than primary hexagonal LaPO sub(4):Eu super(3+) microprisms. Furthermore, the luminescent performance of LaPO sub(4):Eu super(3+) microspheres was demonstrated to reach the standards of the LaPO sub(4):Eu super(3+) bulk material under the same conditions. These results suggest possibilities for the use of as-synthesized monoclinic LaPO sub(4):Eu super(3+) microspheres as alternatives to replace intrinsically uneven bulk materials for many application areas, including light display systems and optoelectronic devices.