Near-Infrared Luminescence and Energy Transfer Characteristics of Dy3+-Tm3+ Co-Doped Selenide Glasses

2007 ◽  
Vol 336-338 ◽  
pp. 647-650
Author(s):  
Zhi Yong Yang ◽  
Lan Luo ◽  
Wei Chen
Keyword(s):  
Energy Transfer ◽  
Near Infrared ◽  
Direct Interaction ◽  
Infrared Emission ◽  
Emission Properties ◽  
Diffusion Limited ◽  
Infrared Luminescence ◽  
Near Infrared Emission ◽  
Energy Acceptor ◽  
Co Doped

Near-infrared emission properties of Dy3+-Tm3+ co-doped Ge-Ga-Sb-Se glasses were investigated. Possible energy transfer routes and the regime of donor decay were discussed. Tm3+ is found to be an efficient sensitizer on the Dy3+:1.34μm luminescence. Probable energy transfer schemes include Tm3+:3H4 → Dy3+: 6F5/2 and Tm3+:3H5 → Dy3+:6F11/2· 6H9/2. The donor (Tm3+) excitation is transferred to an acceptor (Dy3+) by direct interaction or migrates among donors by diffusion-limited regime until it comes into the vicinity of an energy acceptor where direct interaction and transfer occur.

scholarly journals Broadband Near-Infrared Luminescence in Lead Germanate Glass Triply Doped with Yb3+/Er3+/Tm3+

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 2901
Author(s):  
Wojciech A. Pisarski ◽  
Joanna Pisarska ◽  
Radosław Lisiecki ◽  
Witold Ryba-Romanowski
Keyword(s):  
Energy Transfer ◽  
Near Infrared ◽  
Infrared Emission ◽  
Relaxation Processes ◽  
Lead Germanate ◽  
Germanate Glass ◽  
Transfer Processes ◽  
Infrared Luminescence ◽  
Near Infrared Emission ◽  
Co Doped

This paper deals with broadband near-infrared luminescence properties of lead germanate glass triply doped with Yb3+/Er3+/Tm3+. Samples were excited at 800 nm and 975 nm. Their emission intensities and lifetimes depend significantly on Er3+ and Tm3+ concentrations. For samples excited at 800 nm, broadband emissions corresponding to the overlapped 3H4 → 3F4 (Tm3+) and 4I13/2 → 4I15/2 (Er3+) transitions centered at 1.45 µm and 1.5 µm was identified. Measurements of decay curves confirm reduction of 3H4 (Tm3+), 2F5/2 (Yb3+) and 4I13/2 (Er3+) luminescence lifetimes and the presence of energy-transfer processes. The maximal spectral bandwidth equal to 269 nm for the 3F4 → 3H6 transition of Tm3+ suggests that our glass co-doped with Yb3+/Er3+/Tm3+ is a good candidate for broadband near-infrared emission. The energy transfer from 4I13/2 (Er3+) to 3F4 (Tm3+) and cross-relaxation processes are responsible for the enhancement of broadband luminescence near 1.8 µm attributed to the 3F4 → 3H6 transition of thulium ions in lead germanate glass under excitation of Yb3+ ions at 975 nm.

Greatly enhanced broadband near-infrared emission due to energy transfer from Cr3+ to Ni2+ in transparent magnesium aluminosilicate glass ceramics

2009 ◽  
Vol 24 (2) ◽  
pp. 310-315 ◽  
Author(s):  
Jin Luo ◽  
Shifeng Zhou ◽  
Botao Wu ◽  
Hucheng Yang ◽  
Song Ye ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Near Infrared ◽  
Glass Ceramics ◽  
Infrared Emission ◽  
Aluminosilicate Glass ◽  
Nanocrystalline Phase ◽  
Doped Glass ◽  
Near Infrared Emission ◽  
532 Nm ◽  
Co Doped

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.

Super broadband near-infrared emission and energy transfer in Nd–Bi–Er co-doped transparent silicate glass-ceramics

2019 ◽  
Vol 234 ◽  
pp. 142-147 ◽  
Author(s):  
Ho Kim Dan ◽  
Jianbei Qiu ◽  
Dacheng Zhou ◽  
Qing Jiao ◽  
Rongfei Wang ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Silicate Glass ◽  
Near Infrared ◽  
Glass Ceramics ◽  
Infrared Emission ◽  
Near Infrared Emission ◽  
Co Doped

Energy transfer and enhanced broadband near-infrared luminescence in Yb–Bi codoped phosphate glasses

2009 ◽  
Vol 24 (2) ◽  
pp. 516-519 ◽  
Author(s):  
Jian Ruan ◽  
Botao Wu ◽  
Danping Chen ◽  
Yanbo Qiao ◽  
Jianrong Qiu
Keyword(s):  
Energy Transfer ◽  
Emission Intensity ◽  
Near Infrared ◽  
Infrared Emission ◽  
Phosphate Glasses ◽  
Promising Candidate ◽  
Optical Amplification ◽  
Infrared Luminescence ◽  
Doped Glass ◽  
Near Infrared Emission

In this article, we report on enhanced broadband near-infrared emission in Yb–Bi codoped phosphate glasses. The emission intensity of Yb–Bi codoped glass was ˜32 times larger than that of Bi-doped glass when excited with 980-nm laser diode. The highest 1/e fluorescent lifetime of Yb–Bi codoped glass reached 1650 μs. The dependence of emission intensity and fluorescent lifetime on Yb2O3 concentration was investigated. The enhancement of the near-infrared emission is due to energy transfer from Yb3+ (2F5/2–2F7/2) transition to Bi ions, and the highest energy transfer efficiency reached 50%. Yb–Bi codoped phosphate glass should be a promising candidate for broadband optical amplification.

Near Infrared Quantum Cutting of Tb3+–Yb3+ Co-Doped CeF3 Nanophosphors

2016 ◽  
Vol 16 (4) ◽  
pp. 3577-3582
Author(s):  
Sun Xiao ◽  
Hu Xiao-Yun ◽  
Hou Wen-Qian ◽  
Fan Jun ◽  
Miao Hui ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Solar Cells ◽  
Near Infrared ◽  
Emission Spectra ◽  
Infrared Emission ◽  
Emission Area ◽  
Energy Transfers ◽  
Quantum Cutting ◽  
Near Infrared Emission ◽  
Co Doped

In this paper, Tb3+–Yb3+ Co-doped CeF3 nanophosphors were synthesized using the microwave-assisted heating hydrothermal method (M–H). The excitation and emission spectra of the samples at room temperature show that the samples absorb ultraviolet light from 250 nm to 280 nm, and emit light at 300 nm. This corresponds to the transitions from 5D to 4F of Ce3+, 480 nm, 540 nm, 583 nm, 620 nm which correspond to the transitions from 5D4 to 7F6,5,4,3 of Tb3+, 973 nm which corresponds to the transitions from 2F5/2–2F7/2 of Yb3+. In the emission spectra, it is clear that the emission intensity of Ce3+ and Tb3+ decreases, and Yb3+ increases with increasing Yb3+. This suggests that energy transfer from Ce3+ to Yb3+, and Ce3+ to Tb3+ to Yb3+ may occur. In the near infrared emission area, it is noted that a distinct emission centered at 973 nm was observed under 260 nm excitation. This is due to transitions among the different Stark levels of 2FJ(J=5/2, 7/2) Yb3+ ions. This also suggests an energy transfer from Ce3+ ions to Tb3+ and then to Yb3+. The energy transfers from Tb3+–Yb3+ Co-doped CeF3 nanophosphors, which lead to intense NIR emissions at 900–1050 nm, match the energy of Si band gaps of Si-based solar cells. Therefore, these kinds of materials are promising candidates for applications that require modifying if solar spectrums and enhancement of conversion efficiency of Si-based solar cells.

Near-infrared emission and energy transfer in tellurite glasses co-doped with erbium and thulium ions

2014 ◽  
Author(s):  
Jacek Zmojda ◽  
Marcin Kochanowicz ◽  
Tomasz Ragin ◽  
Dominik Dorosz ◽  
Maciej Sitarz
Keyword(s):  
Energy Transfer ◽  
Near Infrared ◽  
Infrared Emission ◽  
Tellurite Glasses ◽  
Near Infrared Emission ◽  
Co Doped

Facile solution synthesis of Bi3+/Yb3+ ions co-doped Cs2Na0.6Ag0.4InCl6 double perovskites with near-infrared emission

2020 ◽  
Vol 49 (43) ◽  
pp. 15231-15237
Author(s):  
Guodong Zhang ◽  
Yi Wei ◽  
Peipei Dang ◽  
Hui Xiao ◽  
Dongjie Liu ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Near Infrared ◽  
Synthesis Method ◽  
Infrared Emission ◽  
Visible Emission ◽  
Double Perovskites ◽  
Solution Synthesis ◽  
Nir Emission ◽  
Near Infrared Emission ◽  
Co Doped

A facile solution synthesis method was developed to produce Cs2Na0.6Ag0.4InCl6:Bi,Yb with a visible emission (400–800 nm) and an NIR emission, which originates from STEs-to-Yb3+ energy transfer.

Super broadband near-infrared emission and energy transfer in Bi–Er co-doped lanthanum aluminosilicate glasses

2013 ◽  
Vol 35 (3) ◽  
pp. 487-490 ◽  
Author(s):  
Tran Minh Hau ◽  
Xue Yu ◽  
Dacheng Zhou ◽  
Zhiguo Song ◽  
Zhengwen Yang ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Near Infrared ◽  
Infrared Emission ◽  
Aluminosilicate Glasses ◽  
Near Infrared Emission ◽  
Co Doped
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