Synthesis of nano-sized YAG:Eu3+ phosphor in continuous supercritical water system
作者： Jung-Hyun In , Hyeon-Cheol Lee , Min-Jae Yoon , Kyo-Kwang Lee , Jae-Wook Lee
DOI: 10.1016/J.SUPFLU.2006.08.006
关键词:
摘要: Abstract Luminescent yttrium aluminum garnet (Y 3 Al 5 O 12 ) nanoparticles doped with Eu (YAG:Eu 3+ were continuously synthesized by directly feeding potassium hydroxide solution and metal salt to supercritical water (SCW). Effects of concentration, pH, residence time on photo-luminescence studied using a continuous tubular reactor. Residence played key role in producing single-phase YAG:Eu nanoparticles. The 20 s under SCW conditions (400 °C 280 bar) was enough form phosphor without any intermediate phases. At this time, the concentration pH condition contributed improving size, morphology luminescent property YAG: average size prepared at 10 at.% 9.10 74 nm identified as nearly uniform spherical-like shape. Without further thermal treatment, reactor showed strong luminescence properties red emission spectra.
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