Effect of co-doping Tm{sup 3+} ions on the emission properties of Dy{sup 3+} ions in tellurite glasses

Journal Article · Mon Jul 15 04:00:00 EDT 2013 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/J.JSSC.2013.03.058· OSTI ID:22309016

Sasikala, T. ^[1]; Mohan Babu, A. ^[2]; Srinivasa Rao, T. ^[3]

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1. Department of Physics, Sri Venkateswara University, Tirupati 517502 (India)
2. Department of Physics, Chadalawada Ramanamma Engineering College, Renigunta Road, Tirupati 517506 (India)
3. Department of Physics, Jawahar Bharati Degree College, Kavali 524202 (India)

The present work reports the absorption, photoluminescence and decay properties of singly doped Dy{sup 3+} and co-doped Dy{sup 3+}/Tm{sup 3+} ions in TeO{sub 2}+ZnO+K{sub 2}O+CaO (TZKC) glasses prepared by the melt quenching technique. The glassy nature of the host glass has been confirmed by X-ray diffraction analysis and the primary vibrational modes were determined from the Raman spectrum. Judd–Ofelt (JO) analysis has been used to calculate the radiative transition rates, branching ratios and radiative lifetime of the emitting {sup 4}F{sub 9/2} state. The effect of co-doping of different concentrations of Tm{sup 3+} ions on the emission properties of Dy{sup 3+} ions has been investigated. The decay profiles of the {sup 4}F{sub 9/2} level were fitted to double exponential as well as Inokuti–Hirayama (IH) model to determine the energy transfer rates between Dy{sup 3+} and Tm{sup 3+} ions. The energy transfer rates found to increase with the increase of Tm{sup 3+} ions concentration. The chromaticity coordinates and color purity of the emitted light for all glasses were determined. - Graphical abstract: The graphical abstract shows the emission spectra of Dy{sup 3+}, Tm{sup 3+} and Dy{sup 3+}/Tm{sup 3+} co-doped TZKC glasses recorded by exciting at 355 nm wavelength. - Highlights: • Zinc tellurite glasses doped with Dy{sup 3+}, Tm{sup 3+} and Dy{sup 3+}/Tm{sup 3+} ions were prepared. • XRD, DTA and Raman spectral measurements were recorded to know the nature of host. • Energy transfer occurs from Dy{sup 3+} ions to Tm{sup 3+} ions. • The color purity of the emitted light was determined.

• OSTI ID: 22309016
• Journal Information: Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Vol. 203; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
ABSORPTION
DIFFERENTIAL THERMAL ANALYSIS
DOPED MATERIALS
DYSPROSIUM IONS
EMISSION SPECTRA
ENERGY TRANSFER
GLASS
PHOTOLUMINESCENCE
QUENCHING
RAMAN SPECTRA
THULIUM IONS
WAVELENGTHS
X-RAY DIFFRACTION