Phosphor yttrium aluminum garnet (Y3Al5O 12, YAG) doped with Eu (10 at%) was synthesized by supercritical water (SCW) and solid-state methods in a batch reactor. The crystals, morphologies and luminescent properties of the phosphors obtained from different pH conditions in the SCW were studied. Pure YAG phase was successfully synthesized at the alkaline condition in the SCW without formation of intermediate phases, while the size and luminescent property of YAG: Eu were strongly affected by pH condition. The luminescent intensity of YAG: Eu by the SCW method without further thermal treatment is stronger than that by the solid-state method with thermal treatment.
Bibliographical noteFunding Information:
This subject is supported by Ministry of Environment as “The Eco-technopia 21 project” and the authors would like to thank the Ministry of Environment.
All Science Journal Classification (ASJC) codes
- Chemical Engineering(all)