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Blue‐emitting AlN:Eu 2+ Powder Phosphor Prepared by Spark Plasma Sintering
Author(s) -
Do HyoungSeoK,
Choi SungWoo,
Hong SeongHyeon
Publication year - 2010
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2009.03424.x
Subject(s) - phosphor , spark plasma sintering , materials science , sintering , photoluminescence , luminescence , analytical chemistry (journal) , doping , metallurgy , optoelectronics , chemistry , chromatography
Blue‐emitting AlN:Eu 2+ powder phosphor was synthesized by spark plasma sintering (SPS) using AlN, Si 3 N 4 , and Eu 2 O 3 as the starting materials, and its luminescence properties were investigated. A single‐phase Eu‐ and Si‐co‐doped AlN powder was successfully fabricated by SPS in the range of 1650°–1800°C for 5 min. The AlN:Eu 2+ obtained exhibited a strong blue emission at 480 nm under the excitation of λ exc =340 nm and an electron beam. The highest photoluminescence intensity was observed in the phosphor sintered at 1700°C, which was comparable to that of the phosphor prepared by gas pressure sintering at 1750°C for 4 h.