Tuning the Doping of Europium in Gadolinium Borate Microparticles at Mesoscale Toward Efficient Production of Red Phosphors.

ABSTRACT: The ideal product of rare-earth-doped phosphors should have uniform particle size distribution and homogeneous doping ions in each particle, and therefore, intensified micromixing at mesoscale is highly required. In this article, inspired by the concept of "mesoscience", we demonstrate the tuning of Eu³⁺ doping in GdBO₃ microparticles at mesoscale by a high-gravity-assisted reactive precipitation-coupled calcination process. The high-gravity environment and tiny droplets generated by the high-gravity rotating packed bed (RPB) reactor lead to significant intensification of mass transfer and micromixing, which are beneficial for the homogeneous doping of Eu³⁺ in the host material during reactive precipitation in liquid solution. Under excitation at 395 nm, th

SUBMITTER: Cui S 

PROVIDER: S-EPMC6740406 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature