Novel Necklace-like MAl2O4:Eu2+, Dy3+ (M = Sr, Ba, Ca) Phosphors via a CTAB-Assisted Solution-Phase Synthesis and Postannealing Approach

被引：53

作者：

Chen, Xiang Ying ^{[1
,2
]}

Ma, Chao ^{[1
,2
]}

Li, Xiao Xuan ^{[1
,2
]}

Shi, Cheng Wu ^{[1
,2
]}

Li, Xue Liang ^{[1
,2
]}

Lu, Dao Rong ^{[1
,2
]}

机构：

[1] Hefei Univ Technol, Sch Chem Engn, Hefei 230009, Anhui, Peoples R China

[2] Anhui Key Lab Controllable Chem React & Mat Chem, Hefei 230009, Anhui, Peoples R China

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2009年 / 113卷 / 07期

关键词：

LUMINESCENCE; SRAL2O4-EU2+; ROUTE;

D O I：

10.1021/jp806375p

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：

We herein present a facile but efficient CTAB-assisted solution-phase synthesis and postannealing approach for preparing a series of necklace-like phosphors, including SrAl2O4:Eu2+, Dy3+, CaAl2O4:Eu2+, Dy3+, and BaAl2O4:Eu2+, Dy3+. The as-prepared samples were characterized by means of XRPD, FESEM, TEM, and PL techniques. The experimental results indicate that CTAB plays the crucial role in the. formation of needle-like precursors in solution, which are, further converted into the final phosphors in a reducing atmosphere of H-2/Ar (15% + 85%). To investigate the optical characteristics of the aluminate phosphors, we conducted the excitation, emission, and afterglow decaying measurements at room temperature. It is noteworthy that the aluminate phosphors are so floppy after being calcined at 1300 degrees C for 5 h, which effectively avoids the traditional crushing of hard phosphor blocks into small particles.

引用

页码：2685 / 2689

页数：5

共 24 条

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