GlowFit—a new tool for thermoluminescence glow-curve deconvolution

Puchalska, Monika; Bilski, P.

doi:10.1016/j.radmeas.2006.03.008

Cited by 233 publications

(105 citation statements)

References 9 publications

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“…The heavily F-doped SnO 2 system showed 3 types of traps [18]. The figure of merit (FOM), a parameter describing the quality of fitting, was calculated [24]. The values of kinetic parameters of the glow curve of (Er, F) co-doped SnO 2 at a heating rate of 3 K s −1 were calculated by GCD method, Chen's formulae, Grossweiner analysis, and Kivits Hagebeuk analysis and are presented in Table 2 [52][53][54].…”

Section: Resultsmentioning

confidence: 99%

Optical and magnetic properties of (Er, F) co-doped SnO$_{2}$ nanocrystals

Kumar¹,

Uma²,

Nagarajan³

2014

Turk J Phys

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Uniformly (Er, F) co-doped SnO 2 nanocrystals, obtained by a low-temperature solution-based method, were characterized by a variety of analytical techniques. The structure, morphology, and ratio of the elements were confirmed by PXRD, SEM, and TEM analysis, respectively. From XPS analysis, atomic concentrations of Sn, O, and F were quantified. Interparticle pore size increased significantly (with a mean pore diameter of 25.82 nm) in the codoped sample. Higher in-plane oxygen vacancies and bands due to multiphonon scattering were observed in the Raman spectrum of the sample. The defect traps in the sample were experimentally determined using TL spectroscopy. A broad intense glow curve at 485 K and a weak emission at 600 K in the TL spectrum were quenched on exposure to UV radiation. A large blue shift of the exciton absorption (due to the Moss-Burstein effect) and sharp bands due to intraconfigurational f − f transitions were observed for (Er, F) co-doped SnO 2 with an estimated band gap of 4.18 eV.From the photoluminescence spectral studies, 3 types of emission centers at 471 nm, 546 nm, and 627 nm were detected.Co-doping stabilized ferromagnetism in SnO 2 at room temperature.

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Section: Resultsmentioning

confidence: 99%

Optical and magnetic properties of (Er, F) co-doped SnO$_{2}$ nanocrystals

Kumar¹,

Uma²,

Nagarajan³

2014

Turk J Phys

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“…Theoretically the value of geometrical form factor (µg) is close to 0.42 for first order kinetics, and value is 0.52 for second order kinetics. The estimated kinetic parameters for Zn2SiO4 Eu 2+ , Mn 2+ phosphor is calculated by curve fitting techniques CGCD curve of experimental data and the peak shape method proposed by Chen and others (Chen 1969;Chen and Kirsh, 1981, Kitis 1998, Puchalska and Bilski, 2006. The activation energy is found in between 0.69 to 0.78eV and the frequency factor is range of 1×10 13 to 3×10 13 for UV irradiated phosphor.…”

Section: Resultsmentioning

confidence: 99%

Photoluminescece and Thermoluminescence Behavior of Zn2SiO4: Mn2+, Eu2+ Phosphor

Dubey¹,

Tiwari²,

Pradhan³

et al. 2014

JLA

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The present paper reports the synthesis, photoluminescence and thermoluminescence (TL) studies of Mn 2+ and Eu 2+ doped Zn2SiO4. The sample was prepared by the modified solid state reaction method, which is the most suitable for large-scale production. The prepared phosphor sample was characterized using Powder XRay Diffraction (PXRD), Field Emission Scanning Electron Microscopy (FESEM), Fourier Transform Infrared Spectroscopy (FTIR), photoluminescence (PL) and Thermoluminescence (TL) techniques. The PL emission was observed in the range 400-650 nm ranges green regions for the Mn 2+ and Eu 2+ doped Zn2SiO4. Excitation spectrum found at 267, 278 and 314nm. Sharp intense peaks found around 490, 544 and 552nm with high intensity. From the XRD data, using the Scherer's formula, the calculated average crystallite size of phosphor is around few microns. Thermoluminescence study was carried out for the phosphor with UV irradiation with linear heating rate 6.7 0 C s -1 . The kinetic parameters are calculated by (Computerized glow curve convolution technique) CGCD technique.

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“…͑iii͒ Finally, as third method, we have analyzed each glow peak by the help of a program called GLOWFIT. 26 An example of such a fit is given in Fig. 9.…”

Section: Thermoluminescence Studiesmentioning

confidence: 99%

Controlled electron and hole trapping inYPO4:Ce3+,Ln3+
Krumpel
¹
,
Bos
²
,
Bessière
³

et al. 2009
Phys. Rev. B
62
4
31
0
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A detailed and systematic electron trapping study was conducted in the scientifically important wide bandgap materials LuPO 4 and YPO 4 doubly doped with Ce 3+ and Ln 3+ ͑Ln= Sm, Dy, Ho, Er, Tm͒. By using vacuum-ultraviolet luminescence spectroscopy and detailed thermoluminescence spectroscopy it was possible to establish by two independent methods that the observed electron traps can be assigned to the Ln 3+ codoping ions. It is shown that the associated electron trap depths are determined by the energy separation between the Ln 2+ ground states and the bottom of the conduction band. Both methods reveal a systematic behavior of electron trap depths as a function of the type of Ln 3+ codoping ion that can be explained by recently developed empirical models. Small differences in trap depths obtained by the two methods are discussed in the context of charge-transfer induced relaxation processes and uncertainties in glow peak analysis. Our experiments provide valuable information on 4f n ↔ 4f n , 4f n → 4f n−1 5d, O 2− → Ln 3+ charge transfer and the lowest-energy PO 4 3− group transitions as well as electron trap depths. These transition energies allowed us to construct a complete energy-level diagram for LuPO 4 :Ln 3+/2+ and YPO 4 :Ln 3+/2+ .

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GlowFit—a new tool for thermoluminescence glow-curve deconvolution

Cited by 233 publications

References 9 publications

Optical and magnetic properties of (Er, F) co-doped SnO$_{2}$ nanocrystals

Optical and magnetic properties of (Er, F) co-doped SnO$_{2}$ nanocrystals

Photoluminescece and Thermoluminescence Behavior of Zn2SiO4: Mn2+, Eu2+ Phosphor

Controlled electron and hole trapping inYPO4:Ce3+,Ln3+
Krumpel
¹
,
Bos
²
,
Bessière
³

et al. 2009
Phys. Rev. B
62
4
31
0
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GlowFit—a new tool for thermoluminescence glow-curve deconvolution

Cited by 233 publications

References 9 publications

Optical and magnetic properties of (Er, F) co-doped SnO$_{2}$ nanocrystals

Optical and magnetic properties of (Er, F) co-doped SnO$_{2}$ nanocrystals

Photoluminescece and Thermoluminescence Behavior of Zn2SiO4: Mn2+, Eu2+ Phosphor

Controlled electron and hole trapping inYPO4:Ce3+,Ln3+Krumpel1, Bos2, Bessière3 et al. 2009Phys. Rev. B624310View full textAdd to dashboardCite

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Controlled electron and hole trapping inYPO4:Ce3+,Ln3+
Krumpel
¹
,
Bos
²
,
Bessière
³

et al. 2009
Phys. Rev. B
62
4
31
0
View full text Add to dashboard Cite