Concentration Quenching of Tb3+ Doped SiC:H and AlN Thin Films in Photoluminescence and Cathodoluminescence Measurements

2013 ◽  
Vol 1571 ◽  
Author(s):  
J. A. Guerra ◽  
F. Benz ◽  
L. Montañez ◽  
R. Grieseler ◽  
P. Schaaf ◽  
...  
Keyword(s):  
Thin Films ◽  
Systematic Study ◽  
Electronic Transition ◽  
Emission Intensity ◽  
Light Emission ◽  
Concentration Quenching ◽  
Optimal Concentration ◽  
Photoluminescence Excitation ◽  
Quenching Effect ◽  
Subsequent Quenching

ABSTRACTWe present a systematic study of photo- and cathodoluminescence measurements in the visible of Terbium doped SiC:H and AlN thin films. The Terbium atomic concentrations vary from 0.9 to 10% for the SiC:H and from 0.8 to 6% for the AlN samples. For both materials the increase of the emission intensity with concentration and the subsequent quenching effect can be seen. The optimal concentration for the highest light emission is found. Photoluminescence excitation spectroscopy addresses the enhancement light emission mechanisms of the principal emission electronic transition of Terbium at ∼542 nm.

Combinatorial approach toward optimization of the light emission intensity of AlOxNy:Yb3+ thin films

2019 ◽  
Vol 58 (12) ◽  
pp. 3097 ◽  
Author(s):  
K. Y. Tucto ◽  
W. Aponte ◽  
J. A. Dulanto ◽  
J. A. Töfflinger ◽  
J. A. Guerra ◽  
...  
Keyword(s):  
Thin Films ◽  
Emission Intensity ◽  
Light Emission ◽  
Combinatorial Approach ◽  
Light Emission Intensity

Analytical Study of the Thermal Activation of Tb Doped Amorphous SiC:H Thin Films

MRS Advances ◽  
2016 ◽  
Vol 1 (38) ◽  
pp. 2689-2694
Author(s):  
J. A. Guerra ◽  
K. Tucto ◽  
L. M. Montañez ◽  
F. De Zela ◽  
J. A. Töfflinger ◽  
...  
Keyword(s):  
Thin Films ◽  
Emission Intensity ◽  
Thermal Activation ◽  
Analytical Study ◽  
Annealing Temperature ◽  
Light Emission ◽  
Equation Model ◽  
Optically Active ◽  
Photon Excitation ◽  
Light Emission Intensity

ABSTRACTThe luminescence of Tb-doped a-SiC:H thin films with different Tb concentrations under sub-bandgap photon excitation was investigated. Two independent processes were identified. The annealing induced activation of the Tb3+ and the inhibition of host-mediated non-radiative recombination paths. The integrated emission intensity is described by a rate equation model, considering these two. In this study, the luminescence enhancement with increasing annealing temperature is shown. The optimal Tb concentration and annealing temperature for the highest Tb-related light emission intensity is determined. Finally, a parameter proportional to the number of optically active ions is found through the aforementioned model.

scholarly journals A LUMINESCENCE PROPERTIES OF Tb, Sm CO-DOPED IN ALKALI ALUMINOBORATE GLASSES

2019 ◽  
Vol 35 (1) ◽  
Author(s):  
Ngoc Tran
Keyword(s):  
Emission Intensity ◽  
Spectroscopic Properties ◽  
Concentration Quenching ◽  
Quenching Mechanism ◽  
Light Emitting ◽  
Quenching Effect ◽  
White Light Emitting Diodes ◽  
Concentration Quenching Effect ◽  
Co Doped ◽  
Color Emission

 Spectroscopic properties of Tb3+ and Sm3+ ions co-doped in alkali aluminoborate glasses (70-x-y)B2O3.28Li2O.2Al2O3.xSm2O3.yTb2O3 (ABL:Tb,Sm) fabricated by melting method have been studied. The emission intensity of Tb3+ or Sm3+ in ABL:Tb or ABL:Sm glasses is influenced by the Tb3+ or Sm3+ doping content, and the optimum concentrations of Tb3+ and Sm3+ are 0.75 mol% and 1.0 mol%, respectively. The concentration quenching effect of Tb3+ or Sm3+ in ABL:Tb,Sm glasses occurs, and the concentration quenching mechanism is f-f interaction for either Tb3+/Sm3+. The ABL:Tb,Sm glasses can produce color emission from green to red by properly tuning the relative ratio between Tb3+ and Sm3+, the emission intensity of Tb3+/Sm3+ in ABL:Tb,Sm glasses can be enhanced by the energy transfer from Tb3+/Tb3+ and Sm3+/Sm3+. The results indicate that ABL:Tb,Sm may be a promising double emission for white light emitting diodes.

Modeling of thermoluminescence in SrY2O4:Eu3+and their concentration quenching effect

Optik ◽  
2021 ◽  
Vol 232 ◽  
pp. 166607
Author(s):  
Amirouche Bouremani ◽  
Dahane Kadri ◽  
Ahmed Kadari ◽  
Vikas Dubey
Keyword(s):  
Concentration Quenching ◽  
Quenching Effect ◽  
Concentration Quenching Effect

Color tuning of white light emission from thin films of ZnSe

2007 ◽  
Vol 125 (1-2) ◽  
pp. 85-91 ◽  
Author(s):  
M. Godlewski ◽  
M. Skrobot ◽  
E. Guziewicz ◽  
M.R. Phillips
Keyword(s):  
Thin Films ◽  
White Light ◽  
Light Emission ◽  
White Light Emission ◽  
Color Tuning

scholarly journals Induction annealing and subsequent quenching: Effect on the thermoelectric properties of boron-doped nanographite ensembles

2010 ◽  
Vol 81 (4) ◽  
pp. 043909 ◽  
Author(s):  
Ming Xie ◽  
Chee Huei Lee ◽  
Jiesheng Wang ◽  
Yoke Khin Yap ◽  
Paola Bruno ◽  
...  
Keyword(s):  
Thermoelectric Properties ◽  
Quenching Effect ◽  
Boron Doped ◽  
Induction Annealing ◽  
Subsequent Quenching

Ester-functionalized thermally activated delayed fluorescence materials

2021 ◽  
Author(s):  
Hiroshi Tasaki ◽  
So Shikita ◽  
In Seob Park ◽  
Takuma Yasuda
Keyword(s):  
Delayed Fluorescence ◽  
Concentration Quenching ◽  
Thermally Activated Delayed Fluorescence ◽  
Quenching Effect ◽  
Thermally Activated ◽  
Concentration Quenching Effect ◽  
Neat Films

A family of thermally activated delayed fluorescence (TADF) materials functionalized with carboxylate esters is presented herein. Owing to their suppressed concentration-quenching effect in neat films, these ester-functionalized TADF emitters could...

Blue-Green Light Emission from Self-Assembled Bipyridinium Thin Films

1998 ◽  
Vol 27 (9) ◽  
pp. 909-910 ◽  
Author(s):  
Haipeng Zheng ◽  
Ruifeng Zhang ◽  
Ying Wu ◽  
Jiacong Shen
Keyword(s):  
Thin Films ◽  
Light Emission ◽  
Green Light ◽  
Green Light Emission ◽  
Self Assembled
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