Intense room temperature near infrared emission from Al/sup 3+/ and Yb/sup 3+/ ions co-implanted SiO/sub 2/ film on silicon

2005 ◽  
Author(s):  
J.G. Zhang ◽  
B.W. Cheng ◽  
J.H. Gao ◽  
J.Z. Yu ◽  
Q.M. Wang
Keyword(s):  
Room Temperature ◽  
Near Infrared ◽  
Infrared Emission ◽  
Near Infrared Emission

Vapour Sensitivity of InP Surface Quantum Dots

2014 ◽  
Vol 605 ◽  
pp. 177-180 ◽  
Author(s):  
Roberta de Angelis ◽  
Mauro Casalboni ◽  
Liliana D’Amico ◽  
Fabio de Matteis ◽  
Fariba Hatami ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Room Temperature ◽  
Near Infrared ◽  
Surface Recombination ◽  
Surface States ◽  
Infrared Emission ◽  
Polar Solvents ◽  
Solvent Type ◽  
Near Infrared Emission ◽  
Inp Surface

We studied the effect of solvent vapours on the photoluminescent emission of self-assembled InP surface quantum dots (SQDs). Their room temperature near infrared emission undergoes a fully reversible intensity enhancement when the dots were exposed to vapours of polar solvents since polar molecules are likely to be adsorbed onto intrinsic surface states and thus reducing non radiative surface recombination. The shape and position of the emission band does not change. The observed effect is dependent on solvent type and concentration with linear law over a limited concentration range.

Room-temperature doping of ytterbium into efficient near-infrared emission CsPbBr1.5Cl1.5 perovskite quantum dots

2020 ◽  
Vol 56 (43) ◽  
pp. 5811-5814 ◽  
Author(s):  
Shuangyi Zhao ◽  
Yubo Zhang ◽  
Zhigang Zang
Keyword(s):  
Quantum Dots ◽  
Quantum Yield ◽  
Room Temperature ◽  
Near Infrared ◽  
Infrared Emission ◽  
Perovskite Quantum Dots ◽  
Near Infrared Emission

Doping of Yb can facilitate the enhancement of NIR quantum yield in CsPbBr1.5Cl1.5 perovskite quantum dots.

Luminescence Spectra of TeO2-PbO-Li2O Doped Nd2O3 Glass

2012 ◽  
Vol 501 ◽  
pp. 121-125 ◽  
Author(s):  
K. Azman ◽  
W.A.W. Razali ◽  
H. Azhan ◽  
M.R. Sahar
Keyword(s):  
Room Temperature ◽  
Near Infrared ◽  
Tellurite Glass ◽  
Emission Spectra ◽  
Infrared Emission ◽  
Luminescence Spectra ◽  
Excitation Wavelength ◽  
Wavelength Emission ◽  
Absorption And Emission Spectroscopy ◽  
Near Infrared Emission

A tellurite glass of TeO2-PbO-Li2O doped with Nd2O3 has been successfully fabricated by using the conventional melt-quenched technique. The absorption and emission spectroscopy have been identified using UV-VIS-NIR and photoluminescence spectrometer, respectively. From the spectroscopy, ten significant spectra have been observed in the region of 400-900 nm. The absorption wavelength centered at 585 nm attributed to 4I9/2 → 4G5/2 transition is the predominant wavelength to be used as the excitation wavelength. Emission spectra have been determined by using 585 nm excitation wavelength at room temperature. From the emission spectra, seven distinctive upconversion bands contributed from Nd3+ were observed in the region of 400-1500 nm. It was found that the bands were centered at 450 nm (4G11/2 → 4I9/2), 485 nm (4G11/2 → 4I11/2), 605 nm (4G11/2 → 4I15/2), 665 nm (4G7/2 → 4I13/2), 880 nm (4F3/2 → 4I9/2), 1062 nm (4F3/2 → 4I11/2) and 1340 nm (4F3/2 → 4I11/2), respectively. Tthese emission bands showed the possibility of visible and near infrared emission spectra.

Anomalous tunable visible to near infrared emission in the Mn2+-doped spinel MgGa2O4 and room-temperature upconversion in the Mn2+ and Yb3+-codoped spinel

2014 ◽  
Vol 2 (41) ◽  
pp. 8811-8816 ◽  
Author(s):  
E. H. Song ◽  
J. L. Wang ◽  
D. C. Yu ◽  
S. Ye ◽  
Q. Y. Zhang
Keyword(s):  
Spinel Structure ◽  
Room Temperature ◽  
Near Infrared ◽  
Infrared Emission ◽  
Visible Emission ◽  
Near Infrared Emission

In contrast to common visible emission, an anomalous near-infrared emission at 790 nm has been demonstrated in spinel structure MgGa2O4:Mn2+ with heavy Mn2+ doping.

Room-temperature near infrared emission and green up-conversion in PbMoO4:Er3+ crystals

2010 ◽  
Vol 32 (9) ◽  
pp. 1046-1049 ◽  
Author(s):  
N.R. Aghamalyan ◽  
G.G. Demirkhanyan ◽  
R.K. Hovsepyan ◽  
R.B. Kostanyan ◽  
D.G. Zargaryan
Keyword(s):  
Room Temperature ◽  
Near Infrared ◽  
Infrared Emission ◽  
Near Infrared Emission

scholarly journals Amphiprotism-Coupled Near-Infrared Emission in Extended Pyrazinacenes Containing Seven Linearly Fused Pyrazine Units

2019 ◽  
Vol 141 (50) ◽  
pp. 19570-19574 ◽  
Author(s):  
Gary J. Richards ◽  
Aël Cador ◽  
Shinji Yamada ◽  
Anna Middleton ◽  
Whitney A. Webre ◽  
...  
Keyword(s):  
Near Infrared ◽  
Infrared Emission ◽  
Near Infrared Emission
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