Relationship between Eu3+ substitution sites and photoluminescence properties of SrIn2O4:Eu3+ spinel phosphors | |
Kang, Yipu1; Thuy, Bui1; Shimokawa, Yohei1; Hayakawa, Tomokatsu1; Sakaida, Satoshi1; Miao, Lei2; Tanemura, Sakae2; Honda, Sawao1; Iwamoto, Yuji1 | |
刊名 | journal of luminescence
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2016 | |
卷号 | 169页码:78-85 |
关键词 | SrIn2O4 Eu3+ substitution site Photoluminescence Red emitting Thermal quenching property |
英文摘要 | eu3+-doped srin2o4 phosphors were synthesized by the solid solution method at 1400 degrees c in air. the chemical composition of the phosphors was systematically changed to study the relation between the eu3+ substitution site and photoluminescence (pl) properties. under excitation of the f-7(0)-> l-5(6) transition of eu3+ at 393 nm, the srin2o4:eu3+ exhibited dominant red emission peaks at 611, 616 and 623 nm, which are attributed to the electric dipole transition d-5(0)-> f-7(2) of eu3+. the results of x-ray diffraction analysis combined with pl spectroscopic analysis revealed that eu3+ ions occupied two different crystallographic in3+ sites in the host srin2o4, while it was found to be impossible to substitute sr2+ with eu3+ prior to the eu3+ substitution at the in3+ sites in the srin2o4. the intensity of the red emission peaks increased with the total amount of dopant eu3+ ion at the two in3+ sites, and reached a maximum at 25 mol% eu3+-doping (srin2-xo4:xeu(3+), x=0.25). moreover, a small amount (< 10 mol%) of eu3+ at the sr2+ site in the srin2-xo4:xeu(3+) was found to contribute to enhance the red emission peak intensity at 616 nm. as a result, the highest red emission intensity evaluated as the total emission peak intensities at the 611, 616 and 623 nm was achieved for sr0.92in1.75o4:0.33eu(3+) in which eu3+ ion concentrations at the in3+ and sr2+ sites were simultaneously optimized as 25 and 8 mol%, respectively (sr1-yin2-xo4:(x+y)eu3+, x=0.25, y=0.08). this red emission intensity was 2.2 times higher than that of the phosphor without contribution of the eu3+ at the sr2+ site (srin2-xo4:xeu(3+), x=0.25). the critical energy transfer distance of eu3+ ion in the sr0.92in1.75o4:0.33eu(3+) phosphor was determined to be 0.817 nm, and the electric multipolar interaction was suggested as the dominant mechanism for concentration quenching of pl emission due to eu3+ ions in the eu3+-doped srin2o4 phosphors investigated in this study. (c) 2015 elsevier b.v. all rights reserved. |
WOS标题词 | science & technology ; physical sciences |
类目[WOS] | optics |
研究领域[WOS] | optics |
关键词[WOS] | host-sensitized luminescence ; light-emitting-diodes ; white-light ; tunable luminescence ; inorganic phosphors ; activated srin2o4 ; cain2o4 ; colors ; field ; leds |
收录类别 | SCI |
语种 | 英语 |
WOS记录号 | WOS:000365604700012 |
内容类型 | 期刊论文 |
源URL | [http://ir.giec.ac.cn/handle/344007/10912] ![]() |
专题 | 中国科学院广州能源研究所 |
作者单位 | 1.Nagoya Inst Technol, Grad Sch Engn, Dept Frontier Mat, Showa Ku, Nagoya, Aichi 4668555, Japan 2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China |
推荐引用方式 GB/T 7714 | Kang, Yipu,Thuy, Bui,Shimokawa, Yohei,et al. Relationship between Eu3+ substitution sites and photoluminescence properties of SrIn2O4:Eu3+ spinel phosphors[J]. journal of luminescence,2016,169:78-85. |
APA | Kang, Yipu.,Thuy, Bui.,Shimokawa, Yohei.,Hayakawa, Tomokatsu.,Sakaida, Satoshi.,...&Iwamoto, Yuji.(2016).Relationship between Eu3+ substitution sites and photoluminescence properties of SrIn2O4:Eu3+ spinel phosphors.journal of luminescence,169,78-85. |
MLA | Kang, Yipu,et al."Relationship between Eu3+ substitution sites and photoluminescence properties of SrIn2O4:Eu3+ spinel phosphors".journal of luminescence 169(2016):78-85. |
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