Luminescence Properties of Eu²⁺ Doped β-SiAlON Phosphor

Abstract:

Eu²⁺ doped b-SiAlON (z = 1, 3, 4) phosphor were synthesized by carbothermal reduction- nitridation (CRN) using precursors powder as materials. The precursors powder prepared by sol-gel method using the SiO₂, AlCl₃×6H₂O, Eu(NO₃)₃, ammonia water, carbon powders as starting materials. The CRN reaction proceeded at 1380°C for 6 h in an N₂ atmosphere. Eu²⁺ doped b-SiAlON (z = 1, 3, 4) had high adsorption in the UV-visible spectral region. While z = 1, one bands were observed in the emission spectrum centered at about 425 nm monitored at 282 nm. The excitation bands centered at about 282 nm. While z = 3, one bands were observed in the emission spectrum centered at about 425 nm monitored at 282 nm. The excitation bands centered at about 282 nm. While z = 3, the emission spectra exhibit one bands with maxima at about 419 nm under 280 nm excitation. The excitation bands centered at about 280 nm. While z = 4, the emission spectrum centered at about 419 nm monitored at 280 nm. The excitation bands centered at about 280 nm. In this work, luminescence properties of Eu²⁺ doped b-SiAlON (z = 1, 3, 4) are independent of z value. It is possible related to the low synthesis temperature.

• Periodical: Key Engineering Materials (Volume 492)
• Pages: 320-323
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.492.320
• Online since: September 2011
• Authors: Li Li, Cheng Zhang, Dan Yu Jiang, Na Zhang, Cai Xia Li, Qiang Li
• Keywords: LED, Luminescence, Phosphor, ß-SiAlON

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