Spectral characterization and excited-state interactions between rare earth ions doped in borosilicate and sol-gel glasses. Energy transfer up-conversion in the Pr-Sm system

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Spectroscopic properties of selected 4f-elements in a sol-gel and two high temperature silicate based glasses are reported. In particular, the spectral properties of the Eu[sup 3+] ion have been used to probe the local coordination environment of the f-elements in these glass matrices. Luminescence studies of the high temperature glasses indicated that the electric dipole allowed f-f transitions dominate the spectra which suggests that the local symmetry around the 4f-ions is low. Temperature-dependent spectroscopic studies of the sol-gel glasses indicated that the f-elements retain a `solution-like` environment prior to thermal processing. After heat treatment, an increase in the emission intensities ... continued below

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9 p.

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Assefa, Z.; Haire, R.G. & Stump, N.A. December 31, 1996.

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  • Assefa, Z.
  • Haire, R.G. Oak Ridge National Lab., TN (United States)
  • Stump, N.A. Winston-Salem State Univ., Winston-Salem, NC (United States). Dept. of Physical Sciences

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Spectroscopic properties of selected 4f-elements in a sol-gel and two high temperature silicate based glasses are reported. In particular, the spectral properties of the Eu[sup 3+] ion have been used to probe the local coordination environment of the f-elements in these glass matrices. Luminescence studies of the high temperature glasses indicated that the electric dipole allowed f-f transitions dominate the spectra which suggests that the local symmetry around the 4f-ions is low. Temperature-dependent spectroscopic studies of the sol-gel glasses indicated that the f-elements retain a `solution-like` environment prior to thermal processing. After heat treatment, an increase in the emission intensities of the electric-dipole transitions is accompanied by a concomitant decrease in the magnetic- dipole allowed transitions. Moreover, excited state interactions has also been observed in the high temperature glasses that contain certain multiple f-elements. In Pr-Sm systems, exclusive excitation of the Sm[sup 3+] ion with a 514 nm argon ion laser line provides a higher- energy emission band ( ca. 490 mn ) from the PR[sup 3+] ion ([sup 3]P[sub 0] -> `[sup 3]H[sub 4]) transition. This energy up- conversion is attributed to energy transfer from the [sup 6]H[sub 13/2] level of the Se[sup 3+] ion to the [sup 3]H[sub 6] state of the PR[sup 3+] ion. Following a second photon absorption, the PR[sup 3+] ion is excited to the emitting [sup 3]P[sub O] level.

Physical Description

9 p.

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INIS; OSTI as DE97001297

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  • 1996 Fall meeting of the Materials Research Society (MRS), Boston, MA (United States), 2-6 Dec 1996

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  • Other: DE97001297
  • Report No.: CONF-961202--19
  • Grant Number: AC05-96OR22464
  • Office of Scientific & Technical Information Report Number: 437663
  • Archival Resource Key: ark:/67531/metadc681357

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  • December 31, 1996

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  • July 25, 2015, 2:20 a.m.

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  • Jan. 22, 2016, 4:41 p.m.

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Assefa, Z.; Haire, R.G. & Stump, N.A. Spectral characterization and excited-state interactions between rare earth ions doped in borosilicate and sol-gel glasses. Energy transfer up-conversion in the Pr-Sm system, article, December 31, 1996; Tennessee. (digital.library.unt.edu/ark:/67531/metadc681357/: accessed September 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.