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Photoluminescence and cathodoluminescence properties of Li+ doped Gd1.88Eu0.12O3
Kang, Yipu1; Shimokawa, Yohei1; Ishihara, Yasutaka1; Tsuji, Hitoshi2; Hashimoto, Shinobu3; Miao, Lei4; Sakae, Tanemura4; Iwamoto, Yuji1
2015-10-01
Source PublicationJOURNAL OF THE CERAMIC SOCIETY OF JAPAN
Volume123Issue:1442Pages:989-994
AbstractLi+-doped cubic Gd1.88Eu0.12O3 phosphors were synthesized at 1200 degrees C in air by co-precipitation (CP) and solid state reaction (SS) methods. X-ray diffraction analysis revealed that, regardless of synthetic method, the average crystallite size for Li+-free Gd1.88Eu0.12O3 was approximately 400 nm, then increased with the amount of Li+ and at 20 mol%, reached about 2.3 mu m. Under excitation of the charge transfer band of Eu3+ at 245 nm, Gd1.88Eu0.12O3 exhibited a dominant photoluminescence (PL) red emission peak at 611 nm assigned to the electric dipole transition D-5(0) -> F-7(2) of Eu3+. The red emission peak intensity increased consistently with the amount of Li+-doping, while CP method was found to be effective in improving the red emission intensity at lower amounts of L-i+-doping from 0 to 8 mol%. Cathodoluminescence (CL) property was studied by mounting the synthesized phosphor on a vacuum fluorescent display (VFD) operated at an anode voltage of 50V. The Gd1.88Eu0.12O3 exhibited a similar spectrum with an intense red emission peak at 611 nm, and the highest luminance intensity for the CL red emission was achieved for 8 mol% Li+-doped Gd1.88Eu0.12O3 synthesized by SS method. The evaluation results of PL and CL properties suggested that, besides the crystallite size of Gd1.88Eu0.12O3, dispersion property of Eu3+ ions in the host Gd2O3 was an important factor for improving luminescent properties of Gd1.88Eu0.12O3. Moreover, under the present VFD operating condition at the low excitation voltage, it was thought to be essential for improving CL emission intensity to maintain a sufficient surface area of Gd1.88Eu0.12O3. (C)2015 The Ceramic Society of Japan. All rights reserved.
SubtypeArticle
KeywordGd2o3:Eu3++:Li++ Photoluminescence Cathodoluminescence Dispersion Property Crystallite Size Specific Surface Area
WOS HeadingsScience & Technology ; Technology
DOI10.2109/jcersj2.123.989
WOS Subject ExtendedMaterials Science
WOS KeywordFIELD-EMISSION DISPLAYS ; LUMINESCENCE PROPERTIES ; PHOSPHORS ; GD2O3-EU3+ ; DEGRADATION ; PARTICLES ; FILMS
Indexed BySCI
Language英语
WOS SubjectMaterials Science, Ceramics
WOS IDWOS:000362506300011
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Document Type期刊论文
Identifierhttp://ir.giec.ac.cn/handle/344007/10872
Collection中国科学院广州能源研究所
Affiliation1.Nagoya Inst Technol, Grad Sch Engn, Dept Frontier Mat, Showa Ku, Nagoya, Aichi 4668555, Japan
2.Noritake Itron Corp, R&D Dept, Taiki, Mie 5192736, Japan
3.Nagoya Inst Technol, Grad Sch Engn, Dept Mat Sci & Engn, Showa Ku, Nagoya, Aichi 4668555, Japan
4.Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China
Recommended Citation
GB/T 7714
Kang, Yipu,Shimokawa, Yohei,Ishihara, Yasutaka,et al. Photoluminescence and cathodoluminescence properties of Li+ doped Gd1.88Eu0.12O3[J]. JOURNAL OF THE CERAMIC SOCIETY OF JAPAN,2015,123(1442):989-994.
APA Kang, Yipu.,Shimokawa, Yohei.,Ishihara, Yasutaka.,Tsuji, Hitoshi.,Hashimoto, Shinobu.,...&Iwamoto, Yuji.(2015).Photoluminescence and cathodoluminescence properties of Li+ doped Gd1.88Eu0.12O3.JOURNAL OF THE CERAMIC SOCIETY OF JAPAN,123(1442),989-994.
MLA Kang, Yipu,et al."Photoluminescence and cathodoluminescence properties of Li+ doped Gd1.88Eu0.12O3".JOURNAL OF THE CERAMIC SOCIETY OF JAPAN 123.1442(2015):989-994.
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