Photoluminescence and time-resolved luminescence spectroscopy of novel NaBa4(BO3)3:Tb3+ phosphor

被引：27
作者：
Zhang, Xinmin [1 ]
Zhang, Zhi [1 ]
Seo, Hyo Jin [2 ]
机构：
[1] Cent S Univ Forestry & Technol, Sch Mat Sci & Engn, Changsha 410004, Hunan, Peoples R China
[2] Pukyong Natl Univ, Dept Phys, Pusan 608737, South Korea
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2011年 / 509卷 / 14期
关键词：
Phosphors; Solid state reactions; Optical properties; Luminescence; Time-resolved optical spectroscopies; BORATES MM'(4)(BO3)(3) M; GREEN-EMITTING PHOSPHOR; CROSS-RELAXATION; RELATIVE PROPERTIES; ENERGY-TRANSFER; TB3+; EU3+; UV; NANOPHOSPHORS; MECHANISM;
D O I：
10.1016/j.jallcom.2011.01.195
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：
This paper reports the photoluminescence (PL) properties of Tb3+ in NaBa4(BO3)(3), as well as the time-resolved luminescence properties. The PL excitation spectrum exhibits intense f -> f transition absorption; the PL emission spectrum shows the strongest D-5(4) -> 7F5 emission at 540 nm. The relative intensity of D-5(3) emission is much weaker than that of D-5(4) emission even in the samples with lower Tb3+ concentration. The D-5(3). D-5(4) cross-relaxation produces a marked increase in the D-5(3) decay rate with increasing Tb3+ concentrations and introduces a non-exponential component into the initial part of the decay. The dipole-dipole interaction is found to be responsible for the cross-relaxation. The decay curves of D-5(4) -> 7F5 transition exhibit an initial rise phenomenon. The two exponential fitting indicates that the initial slow rise is attributed to the D-5(3) -> D-5(4) cross-relaxation process. (C) 2011 Elsevier B. V. All rights reserved.
引用
收藏
页码：4875 / 4877
页数：3
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