Synthesis design of Y3Al5O12: Ce3+ phosphor for fabrication of ceramic converter in automotive application

• Published in: Optical materials Vol. 80; pp. 265 - 270
• Main Authors: Kwon, Seok Bin, Choi, Seung Hee, Yoo, Jung Hyeon, Jeong, Seong Guk, Song, Young Hyun, Yoon, Dae Ho
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.06.2018
• Subjects: Liquid phase precursor; Non-soichiometry; Phosphor ceramic plate; YAG:Ce; Phosphor ceramic plate; Liquid phase precursor; YAG:Ce; Non-soichiometry
• ISSN: 0925-3467; 1873-1252
• DOI: 10.1016/j.optmat.2018.04.037

A cellulose-assisted, liquid-phase precursor (LPP) was used to synthesize a YAG phosphor radiating near 530 nm with a particle size of 400 nm, which may be implemented in many applications. The mixture of the materials was homogeneous, and the cellulose-assisted LPP method involved a liquid-phase reaction at a lower temperature compared to a solid-state reaction (SSR). The reaction was performed at 1200, 1300 and 1400 °C, and the composition ratio of the samples was controlled based on yttrium (L1: 2.7, L2: 2.8, L3: 2.9, L4: 2.95, and L5: 3.1 M). ∼400 nm particles were obtained at 1200 °C and ∼1 μm at 1300 °C. At 1200 °C, the PL intensity was the highest in the Y3.1Al5O12 sample. At 1300 and 1400 °C, the strongest intensity was evident in the Y2.9Al5O12 sample. The XRD patterns for all temperatures showed a YAG phase in JCPDS. •YAG: Ce powder synthesized by cellulose assisted liquid precursor process method.•Luminescence and crystal structure characteristics of YAG: Ce with non-stoichiometric composition.•Optical properties of ceramic plate fabricated with synthesized YAG: Ce powder.•Optical properties of ceramic plate by particle size of YAG: Ce powder.