Luminescence properties of Eu2+ and Eu3+ doped calcium-deficient hydroxyapatite prepared in air

被引：24

作者：

Feng, Zhiqiang ^{[1
]}

Li, Yadong ^{[1
]}

Huang, Yanlin ^{[1
]}

Seo, Hyo Jin ^{[2
]}

机构：

[1] Soochow Univ, Coll Chem Chem Engn & Mat Sci, Suzhou 215123, Peoples R China

[2] Pukyong Natl Univ, Dept Phys, Pusan 608737, South Korea

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2011年 / 509卷 / 25期

关键词：

Calcium-deficient Hydroxyapatite; Precipitation; Luminescence; Eu2+; Eu3+; PHOTOLUMINESCENCE; OCCUPATION; PHOSPHATE; SITES; IONS;

D O I：

10.1016/j.jallcom.2011.04.003

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Eu-doped calcium-deficient hydroxyapatite Ca8.95Eu0.05HPO4(PO4)(5)OH (designated CDHA:Eu) was prepared via the coprecipitation method and calcined in air. Phase purity, crystal structure and morphology of the CDHA: Eu were characterized using X-ray diffraction spectrometer and scanning electron microscopy. The photoluminescence excitation and emission spectra of Eu2+ and Eu3+ ions were measured using luminescence spectrometer. The emission spectra showed a broad emission band centered at 450nm corresponded to the typical 4f(6)5d(1) -> 4f(7) transition of Eu2+ ions, and sharp peaks corresponded to the D-5(0) > F-7(J) (J = 0, 1, 2, 3, 4) transitions of Eu3+ ions. This research was focused on the site-distribution of Eu3+ ions. The Eu3+ in different sites had different spectroscopic features and the charge compensation mechanisms were also discussed. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：7087 / 7092

页数：6

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