Energy transfer process in the rare-earth-ion-doped lead silicate glasses

2002 ◽  
Author(s):  
N. O. Dantas ◽  
Fanyao Qu
Keyword(s):  
Energy Transfer ◽  
Rare Earth ◽  
Transfer Process ◽  
Energy Transfer Process ◽  
Silicate Glasses ◽  
Lead Silicate ◽  
Rare Earth Ion ◽  
The Rare Earth

ENERGY-TRANSFER PROCESS IN RARE-EARTH-ION DOPED SrTiO3

2001 ◽  
Vol 15 (28n30) ◽  
pp. 3924-3927 ◽  
Author(s):  
SHINJI OKAMOTO ◽  
SHOSAKU TANAKA ◽  
HAJIME YAMAMOTO
Keyword(s):  
Energy Transfer ◽  
Rare Earth ◽  
Temperature Dependence ◽  
Oscillator Strength ◽  
Transfer Process ◽  
Emission Intensity ◽  
Energy Transfer Process ◽  
Rare Earth Ions ◽  
Rare Earth Ion ◽  
Pl Spectra

Enhancement of emission intensity of rare-earth-ion doped SrTiO 3 by Al addition has been investigated. In the case of Pr 3+ and Tb 3+, addition of 23-mol% Al intensifies emission by more than 200 times. In contrast, the addition of 20 mol% Al intensifies emission at most by three times in the case of other rare-earth ions. The temperature dependence of PL spectra shows that the energy transfer from carriers to Pr 3+ or Tb 3+ ions is much more efficient than that to other rare-earth ions in SrTiO 3. It can be speculated that the energy transfer in SrTiO 3: Pr 3 or Tb 3+ occurs from carriers to Pr 3+ or Tb 3+ ion via 4f-5d transitions, which are much higher in oscillator strength than 4f-4f transitions.

Up-Conversion White Emission of β-NaYbF4:0.1%Tm3+,0.1%Er3+ under 980 nm Excitation

2014 ◽  
Vol 809-810 ◽  
pp. 697-701
Author(s):  
Tao Pang ◽  
Jing Jing Chen ◽  
Yun Xia Lin ◽  
Yu Ting Shen ◽  
Min Er Zhao ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Rare Earth ◽  
Transfer Process ◽  
Energy Transfer Process ◽  
White Emission ◽  
Color Coordinate ◽  
New Energy ◽  
Rare Earth Doped

Rare-earth doped β-NaYbF4upconversion phosphors were synthesized using a simple hydrothermal procedure. It is found that under 980 nm excitation β-NaYbF4:0.1%Tm are more efficient than β-NaYF4:20%Yb,0.1% that is known as one of the most effective upconversion materials. The unusual result may be related to the particles size. After introducing 0.1%Er3+into the NaYbF4:0.1%Tm lattice, the upconversion white emission with color coordinate of (0.3016,0.3748) is obtained. The investigation of achieving mechanism indicates that besides the energy transfer from Yb3+to Tm3+and Er3+, respectively, there exists a new energy transfer process:3F2,3(Tm3+) +4I11/2(Er3+) →3F4(Tm3+) +2H11/2/4S3/2(Er3+).

scholarly journals Luminescence and energy transfer process in Cu^+,Sm^3+ co-doped sodium silicate glasses

2014 ◽  
Vol 4 (2) ◽  
pp. 315 ◽  
Author(s):  
JingWen Yang ◽  
Hai Guo ◽  
YunLe Wei ◽  
Hyeon Mi Noh ◽  
Jung Hyun Jeong
Keyword(s):  
Energy Transfer ◽  
Sodium Silicate ◽  
Transfer Process ◽  
Energy Transfer Process ◽  
Silicate Glasses ◽  
Co Doped

REMO4 (RE = Y, Gd; M = Nb, Ta) phosphors from hybrid precursors: Microstructure and luminescence

2008 ◽  
Vol 23 (3) ◽  
pp. 679-687 ◽  
Author(s):  
Xiuzhen Xiao ◽  
Bing Yan
Keyword(s):  
Energy Transfer ◽  
Transfer Process ◽  
Energy Transfer Process ◽  
Luminescent Properties ◽  
Concentration Quenching ◽  
Emission Lines ◽  
Rare Earth Ion ◽  
Red Emission ◽  
Characteristic Emission

In this paper, YNbO4:0.05Tb3+ and GdTaO4:0.05Eu3+ phosphors were chosen to study the influence of the firing temperature on the phase and morphologies using novel modified in situ chemical coprecipitation technology. Results show that until the temperature reaches 1000 °C, the formation of YNbO4 and GdTaO4 were realized; with the increasing firing temperatures, those samples present better crystalline structure and better morphologies. The luminescent properties of Eu3+ and Tb3+ have shown that after calcinations at 1000 °C, the intensity of Eu3+ and Tb3+ increases strongly with the increasing of the calcinations temperature, while remaining relatively unchanged at the temperatures ranging between 600 and 800 °C. Furthermore, other rare earth ion doped GdTaO4 and Y1−xGdxTaO4:5 mol% Eu3+ with the different yttrium content were also synthesized after calcinating at the preferable temperature using the same method. The photoluminescence of Y1−xGdxTaO4:5 mol% Eu3+ revealed that the red emission intensity of Eu3+ increases with the increasing of gadolinium content, indicating that Gd ion plays an important role in the energy transfer process. Also, the concentration quenching has been studied in the GdTaO4:Eu3+/Dy3+ systems. Moreover, the characteristic emission lines of Tb3+, Pr3+, and Er3+ in GdTaO4 were observed, showing that the energy transfer process appears between host and those activators.

Influence of silicate sol–gel host matrices and catalyst agents on the luminescent properties of Eu3+/Gd3+ under different excitation wavelengths

RSC Advances ◽  
2015 ◽  
Vol 5 (120) ◽  
pp. 98773-98782 ◽  
Author(s):  
B. Szpikowska-Sroka ◽  
N. Pawlik ◽  
T. Goryczka ◽  
W. A. Pisarski
Keyword(s):  
Energy Transfer ◽  
Transfer Process ◽  
Energy Transfer Process ◽  
Sol Gel ◽  
Luminescent Properties ◽  
Silicate Glasses ◽  
Matrix Composition ◽  
The Matrix ◽  
Host Matrices ◽  
Co Doped

Sol–gel silicate glasses co-doped with Gd3+ and Eu3+ ions were successfully obtained and the pronounced effect of the matrix composition on the luminescent properties and energy transfer process from Gd3+ to Eu3+ was confirmed.

Tunable color emission based on the activator shell thickness of multilayer core–shell nanoparticles under double NIR excitation

CrystEngComm ◽  
2019 ◽  
Vol 21 (28) ◽  
pp. 4175-4183
Author(s):  
Zhaojing Ba ◽  
Yuansuo Zheng ◽  
Min Hu ◽  
Lei Fu ◽  
Yida He ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Rare Earth ◽  
Transfer Process ◽  
Shell Thickness ◽  
Energy Transfer Process ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Core Shell Structure ◽  
Core Shell Nanoparticles ◽  
Color Emission

Rare earth luminescent nanomaterials are hot topic due to their unique fluorescence properties. Effective spectral regulation could be achieved by adjusting the coating thickness to affect the energy transfer process in core–shell structure.

Study of the energy transfer process in rare earth-doped silk fibroin for future application in luminescent compounds

2019 ◽  
Vol 205 ◽  
pp. 423-428 ◽  
Author(s):  
Roberta S. Pugina ◽  
Euzane G. da Rocha ◽  
Sidney J.L. Ribeiro ◽  
José Maurício A. Caiut
Keyword(s):  
Energy Transfer ◽  
Rare Earth ◽  
Silk Fibroin ◽  
Transfer Process ◽  
Energy Transfer Process ◽  
Future Application ◽  
Rare Earth Doped
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