Photoluminescence properties of β-SiAlON:Yb2+, a novel green-emitting phosphor for white light-emitting diodes
We have synthesized Yb2+-activated Si6−zAlzOzN8−z (0.05≤z≤2.3, 0.03 mol% ≤Yb2+≤0.7 mol%) green phosphors by solid-state reaction at 1900 °C for 2 h under a nitrogen pressure of 1.0 MPa. Phase purity, photoluminescence and its thermal quenching were investigated. A single phase was obtained for all v...
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doaj-8d6a68b2ccbe4850b1c3d75f13e94c792020-11-24T23:26:22ZengTaylor & Francis GroupScience and Technology of Advanced Materials1468-69961878-55142011-01-01123034404Photoluminescence properties of β-SiAlON:Yb2+, a novel green-emitting phosphor for white light-emitting diodes Lihong Liu, Rong-Jun Xie, Naoto Hirosaki, Takashi Takeda, Chen-ning Zhang, Jiguang Li and Xudong SunWe have synthesized Yb2+-activated Si6−zAlzOzN8−z (0.05≤z≤2.3, 0.03 mol% ≤Yb2+≤0.7 mol%) green phosphors by solid-state reaction at 1900 °C for 2 h under a nitrogen pressure of 1.0 MPa. Phase purity, photoluminescence and its thermal quenching were investigated. A single phase was obtained for all values of z and Yb2+ concentration. A distinct emission band was observed at 540 nm originating from the 5d–4f electronic transition in Yb2+ under 480 nm excitation. The photoluminescence properties mainly depended on the Yb2+ concentration and chemical composition of the matrix. The resultant phosphor showed high thermal stability, that is, the emission intensity at 150 °C was about 82% of that measured at room temperature. The experimental results indicate that β-SiAlON:Yb2+ is a potential green phosphor for white light-emitting diodes (LEDs), which use blue LEDs as the primary light source.http://iopscience.iop.org/1468-6996/12/3/034404 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Lihong Liu, Rong-Jun Xie, Naoto Hirosaki, Takashi Takeda, Chen-ning Zhang, Jiguang Li and Xudong Sun |
spellingShingle |
Lihong Liu, Rong-Jun Xie, Naoto Hirosaki, Takashi Takeda, Chen-ning Zhang, Jiguang Li and Xudong Sun Photoluminescence properties of β-SiAlON:Yb2+, a novel green-emitting phosphor for white light-emitting diodes Science and Technology of Advanced Materials |
author_facet |
Lihong Liu, Rong-Jun Xie, Naoto Hirosaki, Takashi Takeda, Chen-ning Zhang, Jiguang Li and Xudong Sun |
author_sort |
Lihong Liu, Rong-Jun Xie, Naoto Hirosaki, Takashi Takeda, Chen-ning Zhang, Jiguang Li and Xudong Sun |
title |
Photoluminescence properties of β-SiAlON:Yb2+, a novel green-emitting phosphor for white light-emitting diodes |
title_short |
Photoluminescence properties of β-SiAlON:Yb2+, a novel green-emitting phosphor for white light-emitting diodes |
title_full |
Photoluminescence properties of β-SiAlON:Yb2+, a novel green-emitting phosphor for white light-emitting diodes |
title_fullStr |
Photoluminescence properties of β-SiAlON:Yb2+, a novel green-emitting phosphor for white light-emitting diodes |
title_full_unstemmed |
Photoluminescence properties of β-SiAlON:Yb2+, a novel green-emitting phosphor for white light-emitting diodes |
title_sort |
photoluminescence properties of β-sialon:yb2+, a novel green-emitting phosphor for white light-emitting diodes |
publisher |
Taylor & Francis Group |
series |
Science and Technology of Advanced Materials |
issn |
1468-6996 1878-5514 |
publishDate |
2011-01-01 |
description |
We have synthesized Yb2+-activated Si6−zAlzOzN8−z (0.05≤z≤2.3, 0.03 mol% ≤Yb2+≤0.7 mol%) green phosphors by solid-state reaction at 1900 °C for 2 h under a nitrogen pressure of 1.0 MPa. Phase purity, photoluminescence and its thermal quenching were investigated. A single phase was obtained for all values of z and Yb2+ concentration. A distinct emission band was observed at 540 nm originating from the 5d–4f electronic transition in Yb2+ under 480 nm excitation. The photoluminescence properties mainly depended on the Yb2+ concentration and chemical composition of the matrix. The resultant phosphor showed high thermal stability, that is, the emission intensity at 150 °C was about 82% of that measured at room temperature. The experimental results indicate that β-SiAlON:Yb2+ is a potential green phosphor for white light-emitting diodes (LEDs), which use blue LEDs as the primary light source. |
url |
http://iopscience.iop.org/1468-6996/12/3/034404 |
work_keys_str_mv |
AT lihongliurongjunxienaotohirosakitakashitakedachenningzhangjiguangliandxudongsun photoluminescencepropertiesofbsialonyb2anovelgreenemittingphosphorforwhitelightemittingdiodes |
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1725555416491884544 |