Thermoluminescence and chemical characterization of natural calcite collected from Kodwa mines

Dubey, Vikas; Kaur, Jaspreet; Suryanarayana, N. S.; Murthy, K. V. R.

doi:10.1007/s11164-012-0872-7

Cited by 37 publications

(21 citation statements)

References 18 publications

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“…Hyderabad. The obtained phosphor under the TL examination is given UV radiation using 254nm UV source (Dubey et al, 2010;Dubey et al, 2012 Fig. 1 shows the X-ray Powder Diffraction (XRPD) patterns of the Zn2SiO4:Mn 2+ Eu 2+ , samples.…”

Section: Methodsmentioning

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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Section: Methodsmentioning

confidence: 99%

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

Dubey¹,

Tiwari²,

Pradhan³

et al. 2014

JLA

Self Cite

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show abstract

“…The photoluminescence (PL) emission and excitation spectra were recorded at room temperature by use of a Shimadzu RF-5301 PC spectrofluorophotometer. The excitation source was a Xenon lamp [25][26][27][28][29][30]. Fig.…”

Section: Methodsmentioning

confidence: 99%