Continuous Liquid Phase Synthesis of Europium and Bismuth Co-Doped Yttrium Vanadate Nanophosphor Using Microwave Heating

Takashi KUNIMOTO  Yoshiko FUJITA  Hiroshi OKURA  

IEICE TRANSACTIONS on Electronics   Vol.E99-C   No.11   pp.1249-1254
Publication Date: 2016/11/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.E99.C.1249
Type of Manuscript: INVITED PAPER (Special Section on Electronic Displays)
nanophosphor,  flow reactor,  microwave heating,  vanadate,  

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A continuous flow reactor equipped with a low-loss flow channel and a microwave cavity was developed for synthesizing nanophosphors. A continuous solution synthesis of YVO4:Eu,Bi nanophosphor was succeeded through the rapid hydrothermal method using this equipment. Internal quantum efficiency of YVO4:Eu,Bi nanophosphor obtained by 20 minutes microwave heating is about 30% at 320 nm as high as that obtained by 6 hours hydrothermal treatment in autoclave.