Enhanced upconversion emission in Er3+-doped tellurite glass containing silver nanoparticles

被引：75
|
作者：
Singh, S. K. [1 ]
Giri, N. K. [1 ]
Rai, D. K. [1 ]
Rai, S. B. [1 ]
机构：
[1] Banaras Hindu Univ, Dept Phys, Laser & Spect Lab, Varanasi 221005, Uttar Pradesh, India
来源：
SOLID STATE SCIENCES | 2010年 / 12卷 / 08期
关键词：
Tellurite glass; Silver nanoparticles; Rare earth; Upconversion; ENERGY-TRANSFER; FLUORESCENCE; NANOSTRUCTURES; PARTICLES;
D O I：
10.1016/j.solidstatesciences.2010.06.011
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Er3+-doped tellurite glass containing silver nanoparticles (NPs) has been synthesized. Detailed structural and optical characterizations have been carried out. Infrared to visible frequency upconversion (UC) emission has been observed in Er3+-doped tellurite glass on pumping with the 976 nm radiation. Further, an enhancement in UC emission intensity of green bands (H-2(11/2) -> I-4(15/2) and S-4(3/2) -> I-4(15/2)) of Er3+ ion has been observed up to four times in presence of silver NPs in the glass annealed at 240 degrees C for 40 h. Though, there is enhancement in intensity in the red band (F-4(9/2) -> I-4(15/2)) also but it is smaller. The enhancement in fluorescence intensity is attributed to local field effect due to the silver NPs. (C) 2010 Elsevier Masson SAS. All rights reserved.
引用
收藏
页码：1480 / 1483
页数：4
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