Details

Autor(en) / Beteiligte

• Kim, Hyun-Gu
• Kang, Eun-Hee
• Kim, Bo-Hye
• Hong, Seong-Hyeon

Titel

Preparation and luminescence properties of phosphor

Ist Teil von

• Optical materials, 2013-04, Vol.35 (6), p.1279-1282

Erscheinungsjahr

2013

Quelle

Access via ScienceDirect (Elsevier)

Beschreibungen/Notizen

• Bluish-green Ba 3 Si 6 O 9 N 4 : Eu 2 + phosphors were synthesized by Ba 3 SiO 5 : Eu 2 + precursor and solid-state reaction methods, and their photoluminescence (PL) properties were investigated. A single phase of Ba3Si6O9N4 was formed in the precursor method whereas a mixture of Ba3Si6O9N4 and Ba3Si6O12N2 phases was obtained in the solid-state reaction method. The as-synthesized Ba 3 Si 6 O 9 N 4 : Eu 2 + phosphor exhibited a single band emission centered at 487 nm under the excitation of I>ex = 400 nm, and the emission intensity increased by similar to 20 times when the temperature was reduced from 298 to 10 K. The effects of starting material composition, calcination temperature, and Eu2+ doping concentration on the phase formation and PL characteristics were examined. The peak intensity of Ba 3 Si 6 O 9 N 4 : Eu 2 + was about 10% of Ba 3 Si 6 O 12 N 2 : Eu 2 + at 298 K, but its thermal stability was comparable to that of Ba 3 Si 6 O 12 N 2 : Eu 2 + in the range of 298a473 K.