Enhancement of infrared emission in Er3+ , Yb3+ co-doped sodium niobium tellurite nano glass-ceramics

2013 ◽  
Vol 250 (4) ◽  
pp. 837-842 ◽  
Author(s):  
J. Suresh Kumar ◽  
K. Pavani ◽  
M. P. F. Graça ◽  
M. J. Soares ◽  
M. A. Valente
2014 ◽  
Vol 404 ◽  
pp. 37-42 ◽  
Author(s):  
Zhiyong Zhao ◽  
Chao Liu ◽  
Yang Jiang ◽  
Jihong Zhang ◽  
Haizheng Tao ◽  
...  

2009 ◽  
Vol 24 (2) ◽  
pp. 310-315 ◽  
Author(s):  
Jin Luo ◽  
Shifeng Zhou ◽  
Botao Wu ◽  
Hucheng Yang ◽  
Song Ye ◽  
...  

Cr3+/Ni2+ co-doped optically transparent magnesium aluminosilicate glass-ceramics containing MgAl2O4 nanocrystals have been prepared by heat-treatment. Greatly enhanced broadband near-infrared emission centered at 1216 nm in Cr3+/Ni2+ co-doped glass ceramics is observed when compared with the Ni2+ single-doped glass ceramics under 532 nm excitation. The observed enhancement of infrared emission is attributed to the energy transfer from Cr3+ to Ni2+ ions in the nanocrystalline phase, which leads to the emission due to 3T2(3F) → 3A2(3F) transition of octahedral Ni2+ ions.


2019 ◽  
Vol 234 ◽  
pp. 142-147 ◽  
Author(s):  
Ho Kim Dan ◽  
Jianbei Qiu ◽  
Dacheng Zhou ◽  
Qing Jiao ◽  
Rongfei Wang ◽  
...  

2007 ◽  
Vol 101 (11) ◽  
pp. 113511 ◽  
Author(s):  
Daqin Chen ◽  
Yuansheng Wang ◽  
Feng Bao ◽  
Yunlong Yu

2010 ◽  
Vol 43 (9) ◽  
pp. 095401 ◽  
Author(s):  
Yixi Zhuang ◽  
Miaojia Guan ◽  
Junhua Xie ◽  
Yu Teng ◽  
Jiajia Zhou ◽  
...  

2019 ◽  
Vol 45 (15) ◽  
pp. 18831-18837 ◽  
Author(s):  
Mingming Li ◽  
Jiapan Luan ◽  
Yin Zhang ◽  
Feng Jiang ◽  
Xiang Zhou ◽  
...  

2008 ◽  
Vol 146 (1-3) ◽  
pp. 66-68 ◽  
Author(s):  
V.K. Tikhomirov ◽  
K. Driesen ◽  
C. Görller-Walrand ◽  
M. Mortier

2012 ◽  
Vol 1471 ◽  
Author(s):  
Z. Pan ◽  
G. Sekar ◽  
R. Akrobetu ◽  
R. Mu ◽  
S. H. Morgan

ABSTRACTTb and Yb co-doped oxyfluoride glasses were fabricated in a lithium-lanthanum-aluminosilicate matrix by a melt-quench technique. Glass-ceramics were obtained by appropriate heat treatment of the as-prepared glasses. Visible to near-infrared down-conversion quantum cutting was studied for samples with different thermal annealing temperatures and time. Laser light at 488 nm was used to excite Tb3+ ions while Yb3+ ions were excited by energy transfer from the excited Tb3+ ions. Near-infrared emission at 940 – 1020 nm was observed. It has been found that the emission at 940 – 1020 nm increased significantly from the glass-ceramic compared to that of the as-prepared glass. This result suggests that the energy-transfer efficiency increases in glass-ceramics compared to that in glass. A significant portion of rare-earth ions may be incorporated inside LaF3 nanoparticles (NPs) in the glass-ceramic. Because the Yb3+ emission at 940 – 1020 nm is matched well with the band gap of crystalline Si, the quantum cutting effect may have its potential application in silicon-based solar cells.


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