Absolute thermal lens method to determine fluorescence quantum efficiency and concentration quenching of solids

1998 ◽  
Vol 57 (17) ◽  
pp. 10545-10549 ◽  
Author(s):  
M. L. Baesso ◽  
A. C. Bento ◽  
A. A. Andrade ◽  
J. A. Sampaio ◽  
E. Pecoraro ◽  
...  
Keyword(s):  
Quantum Efficiency ◽  
Thermal Lens ◽  
Concentration Quenching

Thermal lens determination of fluorescence quantum efficiency of3F4level of Tm3+ions in solids

2005 ◽  
Vol 125 ◽  
pp. 193-196 ◽  
Author(s):  
S. L. Oliveira ◽  
S. M. Lima ◽  
T. Catunda ◽  
H. Vargas ◽  
L. A.O. Nunes ◽  
...  
Keyword(s):  
Quantum Efficiency ◽  
Thermal Lens

Ce:LaB3O6 glass for high-resolution radiation dosimetry

2022 ◽  
Author(s):  
Dongsheng Yuan ◽  
Encarnación G. Víllora ◽  
Takumi Kato ◽  
Daisuke Nakauchi ◽  
Takayuki YANAGIDA ◽  
...  
Keyword(s):  
High Resolution ◽  
Quantum Efficiency ◽  
Linear Dependence ◽  
Interatomic Distance ◽  
Irradiation Dose ◽  
Radiation Dosimetry ◽  
Dipole Interaction ◽  
Concentration Quenching ◽  
Optimum Concentration ◽  
Reducing Atmosphere

Abstract Ce:LaB3O6 (LBO) glass, whose constituents are abundant elements and fabrication is easy and cheap, is found to be a promising thermoluminescence (TL) dosimeter. This is originally achieved by CeF3 doping and melting under a reducing atmosphere, with the optimum concentration of 0.1% (quantum efficiency = 66%). The corresponding Ce interatomic distance is ~ 4 nm, below which concentration quenching occurs via Ce dipole-dipole interaction, as elucidated experimentally by Dexter’s theory. Ce:LBO exhibits a good dose resolution, with a linear dependence covering five orders of magnitude on both irradiation-dose and TL-response. Furthermore, it can be cyclically irradiated and read without degradation.

scholarly journals Studies on Fluorescence Efficiency and Photodegradation of Rhodamine 6G Doped PMMA Using a Dual Beam Thermal Lens Technique

2002 ◽  
Vol 20 (2-4) ◽  
pp. 99-110 ◽  
Author(s):  
Achamma Kurian ◽  
Nibu A. George ◽  
Binoy Paul ◽  
V. P. N. Nampoori ◽  
C. P. G. Vallabhan
Keyword(s):  
Thermal Lens ◽  
Fluorescence Quantum Yield ◽  
Laser Excitation ◽  
Rhodamine 6G ◽  
Fluorescence Emission ◽  
Concentration Quenching ◽  
Dye Molecules ◽  
Dual Beam ◽  
Fluorescence Efficiency ◽  
Absolute Fluorescence

In this paper we report the use of the dual beam thermal lens technique as a quantitative method to determine absolute fluorescence quantum efficiency and concentration quenching of fluorescence emission from rhodamine 6G doped Poly(methyl methacrylate) (PMMA), prepared with different concentrations of the dye. A comparison of the present data with that reported in the literature indicates that the observed variation of fluorescence quantum yield with respect to the dye concentration follows a similar profile as in the earlier reported observations on rhodamine 6G in solution. The photodegradation of the dye molecules under cw laser excitation is also studied using the present method.

Determination fluorescence quantum efficiency of Nd3+doped glasses and crystal by thermal lens technique in function of the wavelength

2003 ◽  
Author(s):  
A. A. Andrade ◽  
S. M. Lima ◽  
J. A. Sampaio ◽  
Tomaz Catunda ◽  
Mauro L. Baesso
Keyword(s):  
Quantum Efficiency ◽  
Thermal Lens ◽  
Doped Glasses

Multiwavelength thermal lens determination of fluorescence quantum efficiency of solids: Application to Nd3+-doped fluoride glass

2001 ◽  
Vol 78 (21) ◽  
pp. 3220-3222 ◽  
Author(s):  
S. M. Lima ◽  
A. A. Andrade ◽  
R. Lebullenger ◽  
A. C. Hernandes ◽  
T. Catunda ◽  
...  
Keyword(s):  
Quantum Efficiency ◽  
Thermal Lens ◽  
Fluoride Glass

scholarly journals Highly efficient red-emitting Ca2YSbO6:Eu3+ double perovskite phosphors for warm WLEDs

RSC Advances ◽  
2019 ◽  
Vol 9 (36) ◽  
pp. 20742-20748 ◽  
Author(s):  
Meijiao Liu ◽  
Biao Shen ◽  
Keyuan Wang ◽  
Jiasong Zhong ◽  
Daqin Chen
Keyword(s):  
Quantum Efficiency ◽  
Potential Application ◽  
Double Perovskite ◽  
Concentration Quenching ◽  
High Concentration ◽  
Highly Efficient ◽  
Red Emitting Phosphor

A double perovskite Ca2YSbO6:Eu3+ red-emitting phosphor with high concentration quenching and excellent quantum efficiency was developed to find a potential application in warm WLEDs.

Absolute photoluminescence quantum efficiency of P3HT/CHCl3 solution by Thermal Lens Spectrometry

2013 ◽  
Vol 163 ◽  
pp. 38-41 ◽  
Author(s):  
R.A. Cruz ◽  
T. Catunda ◽  
W.M. Facchinatto ◽  
D.T. Balogh ◽  
R.M. Faria
Keyword(s):  
Quantum Efficiency ◽  
Thermal Lens ◽  
Thermal Lens Spectrometry

Fluorescence quantum efficiency measurements using the thermal lens technique

2003 ◽  
Vol 74 (1) ◽  
pp. 857-859 ◽  
Author(s):  
A. A. Andrade ◽  
S. M. Lima ◽  
V. Pilla ◽  
J. A. Sampaio ◽  
T. Catunda ◽  
...  
Keyword(s):  
Quantum Efficiency ◽  
Thermal Lens

Fluorescence quantum efficiency measurements in the presence of Auger upconversion by the thermal lens method

2003 ◽  
Vol 28 (4) ◽  
pp. 239 ◽  
Author(s):  
Viviane Pilla ◽  
Tomaz Catunda ◽  
Hans P. Jenssen ◽  
Arlete Cassanho
Keyword(s):  
Quantum Efficiency ◽  
Thermal Lens

Temperature dependence of fluorescence quantum efficiency of optical glasses determined by thermal lens spectrometry

2002 ◽  
Vol 304 (1-3) ◽  
pp. 244-250 ◽  
Author(s):  
E. Peliçon ◽  
J.H. Rohling ◽  
A.N. Medina ◽  
A.C. Bento ◽  
M.L. Baesso ◽  
...  
Keyword(s):  
Temperature Dependence ◽  
Quantum Efficiency ◽  
Thermal Lens ◽  
Thermal Lens Spectrometry ◽  
Optical Glasses
Sign in / Sign up

Export Citation Format

Share Document