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Effect of Yb3+ concentration on Er3+ luminescence properties of sol-gelderived silica-alumina xerogels

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Abstract

Er3+ / Yb3+ co-doped silica-alumina monolithic xerogels were prepared with the same concentration on 2 000 Er/Si ppm and 6 000 Al/Si ppm. The Yb/Si content was varied from 0 to 4 000 ppm Densification of the samples was achieved by thermal treatment in air at 950 °C for 120 hours with a heating rate 0.1 °C/min. Photoluminescence spectroscopy was used to obtain information about the effective excitation efficiency of Er3+ ions by co-do** with Yb3+ ions. The infrared-to-visible up-conversion luminescence has been investigated upon continuous wave excitation at 980 nm. The samples exhibit red, green and blue up-conversion emission. It is found that the intensity of up-conversion luminescence increases with increasing Yb3+ do** concentration. An opposite behavior is observed for the4l13/2 luminescence of the Er3+ ions.

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Authors and Affiliations

  1. CNR-IFN Istituto di Fotonica e Nanotecnologie, CSMFO group, via Sommarie 14, I-38050, Povo, Trento, Italy

    K. Tran Ngoc, C. Armellini, A. Chiasera, M. Ferrari & Y. Jestin

  2. ITIMS-Hanoi University of Technology, No. 1, Dai Co Viet, Hanoi, Vietnam

    K. Tran Ngoc, H. Pham Thanh & C. Nguyen Duc

  3. Dipartimento di Fisica, Università di Trento, CSMFO group, via Sommarive 14, I-38050, Povo, Trento, Italy

    M. Montagna & E. Moser

  4. CNR-IFAC Nello Carrara Institute of Applied Physics, Lab. of Optoelectronic Technologies, Via Madonna del Piano 10, 50019, Sesto Fiorentino, Firenze, Italy

    S. Pelli & G. C. Righini

Authors
  1. K. Tran Ngoc
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  2. H. Pham Thanh
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  3. C. Nguyen Duc
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  4. C. Armellini
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  5. A. Chiasera
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  6. M. Ferrari
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  7. Y. Jestin
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  8. M. Montagna
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  9. E. Moser
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  10. S. Pelli
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  11. G. C. Righini
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Additional information

This research is performed in the context of the Italy-Vietnam research project 6 BS 2 MAE 2006–2008. MIUR-FIRB RBNE012 N3X, PAT FAPVU2004–2006, MIUR-PRIN 2004–2006.

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Ngoc, K.T., Thanh, H.P., Duc, C.N. et al. Effect of Yb3+ concentration on Er3+ luminescence properties of sol-gelderived silica-alumina xerogels. Optoelectr. Lett. 2, 354–357 (2006). https://doi.org/10.1007/BF03033522

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  • DOI: https://doi.org/10.1007/BF03033522

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