Time-resolved measurements of near infrared emission spectra from explosions: Pure pentaerythritol tetranitrate and its mixtures containing silver and aluminum particles

2010 ◽  
Vol 108 (3) ◽  
pp. 036101 ◽  
Author(s):  
Jon D. Koch ◽  
Scott Piecuch ◽  
James M. Lightstone ◽  
Joel R. Carney ◽  
Joe Hooper
Keyword(s):  
Near Infrared ◽  
Emission Spectra ◽  
Infrared Emission ◽  
Pentaerythritol Tetranitrate ◽  
Aluminum Particles ◽  
Time Resolved ◽  
Near Infrared Emission ◽  
Time Resolved Measurements

Luminescence Properties of Er3+/Tm3+-Doped Ga2O3-Bi2O3-PbO-GeO2 System Glasses

2011 ◽  
Vol 399-401 ◽  
pp. 982-986
Author(s):  
Jin Liu ◽  
Dong Mei Shi ◽  
Ying Gang Zhao ◽  
Xiao Feng Wang
Keyword(s):  
Emission Intensity ◽  
Near Infrared ◽  
Emission Spectra ◽  
Upconversion Emission ◽  
Infrared Emission ◽  
Optical Devices ◽  
Luminescence Properties ◽  
Red Emission ◽  
Fiber Optical ◽  
Near Infrared Emission

The visible and near infrared emission spectra of Er3+/Tm3+-doped Ga2O3-Bi2O3-PbO-GeO2(GBPG) glasses excited at 808 nm are experimentally investigated. The results reveal that 1.53 µm emission were enhanced with an increase of Er3+concentration. Furthermore, the incorporation of Er3+into Tm3+-doped systems has also resulted in intense 522, 545 and 693nm upconversion emission intensity and an weak 660 nm red emission. The possible mechanism and related discussions on this phenomenon have been presented. The results show that Er3+/Tm3+-codoped GBPG glass may be a promising materials for developing laser and fiber optical devices.

Tunable near-infrared emission of binary nano- and mesoscale GUMBOS

RSC Advances ◽  
2014 ◽  
Vol 4 (54) ◽  
pp. 28471-28480 ◽  
Author(s):  
Atiya N. Jordan ◽  
Noureen Siraj ◽  
Susmita Das ◽  
Isiah M. Warner
Keyword(s):  
Energy Transfer ◽  
Near Infrared ◽  
Resonance Energy Transfer ◽  
Resonance Energy ◽  
Emission Spectra ◽  
Infrared Emission ◽  
Förster Resonance Energy Transfer ◽  
Near Infrared Emission ◽  
Tunable Emission ◽  
Förster Resonance

Mixtures of GUMBOS were used to form binary nanomaterials with tunable emission spectra due to Förster resonance energy transfer (FRET).

Near infrared emission spectra of CoH and CoD

2006 ◽  
Vol 237 (1) ◽  
pp. 11-18 ◽  
Author(s):  
Iouli E. Gordon ◽  
Robert J. Le Roy ◽  
Peter F. Bernath
Keyword(s):  
Near Infrared ◽  
Emission Spectra ◽  
Infrared Emission ◽  
Near Infrared Emission

Infrared and near infrared emission spectra of SbH and SbD

2005 ◽  
Vol 229 (2) ◽  
pp. 257-265 ◽  
Author(s):  
Shanshan Yu ◽  
Dejian Fu ◽  
Alireza Shayesteh ◽  
Iouli E. Gordon ◽  
Dominique R.T. Appadoo ◽  
...  
Keyword(s):  
Near Infrared ◽  
Emission Spectra ◽  
Infrared Emission ◽  
Near Infrared Emission

Luminescence of Alizarin and its Metal Complexes

1990 ◽  
Vol 185 ◽  
Author(s):  
Londa J. Larson ◽  
Jeffrey I. Zink
Keyword(s):  
Excited State ◽  
Excited States ◽  
Potassium Salt ◽  
Copper Complexes ◽  
Near Infrared ◽  
Emission Spectra ◽  
Infrared Emission ◽  
Localized State ◽  
Cobalt Nickel ◽  
Near Infrared Emission

AbstractThe red/near-infrared emission spectra of alizarin (1,2-dihydroxyanthraquinonone), the potassium salt of alizarin and the aluminum and zinc complexes of alizarin in the solid state are reported. The emission is assigned to an alizarin localized transition from an in-plane nonbonding orbital delocalized over the anthraquinone rings to a predominantly π* C=O acceptor orbital (nπ* ligand localized excited state). The cobalt, nickel and copper complexes do not emit from their nπ* excited state. In these complexes, metal centered d-d excited states which lie lower in energy than the ligand localized state effectively deactivate the luminescence.

Infrared and near infrared emission spectra of TeH and TeD

2005 ◽  
Vol 230 (2) ◽  
pp. 105-116 ◽  
Author(s):  
Shanshan Yu ◽  
Alireza Shayesteh ◽  
Dejian Fu ◽  
Peter F. Bernath
Keyword(s):  
Near Infrared ◽  
Emission Spectra ◽  
Infrared Emission ◽  
Near Infrared Emission

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.

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