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Structural and Optical Properties of Eu3+-DOPED Sr3Y2Ge3O12 as an Efficient Red Phosphor for WLED Application

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Journal of Applied Spectroscopy Aims and scope

This paper is aimed at investigating the structure and luminescence properties of Sr3Y2Ge3O12 activated by Eu3+ (SYGO:Eu3+), which were synthesized by using the sol-gel method. The synthesis was conducted at 1200°C for 8 h, with an optimal doping concentration of 5 mol% Eu3+. Under near-ultraviolet excitations at 395 nm, SYGO:x mol.% Eu3+ phosphors showed the red emission of Eu3+ (5D0–7F1) at 612 nm, and the photoluminescence intensity was highest at 5 mol.% Eu3+ doping. X-ray diff raction analysis of SYGO materials displays a single-phase structure that belongs to the Ia3d (230) space group. The result showed that the Eu3+ ion substitutes the asymmetrical location in the SYGO host, particularly the Sr2+ position, by calculating the ionic radius. In addition, the investigated red phosphors show high luminescence intensity and deep red emission. Thus, they show application potential as redemitting phosphor materials in white LEDs under near-ultraviolet excitations.

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Authors and Affiliations

  1. School of Materials Science Engineering (SMSE), Hanoi University of Science and Technology (HUST), Hanoi, Vietnam

    Cao Xuan Thang, Nguyen Mai Cao Hoang Phuong Lan & Pham Van Tuan

  2. Faculty of Materials, Hanoi University of Civil Engineering, Hanoi, Vietnam

    Nguyen Truong Giang

Authors
  1. Cao Xuan Thang
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  2. Nguyen Mai Cao Hoang Phuong Lan
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  3. Pham Van Tuan
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  4. Nguyen Truong Giang
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Correspondence to Cao Xuan Thang.

Additional information

Abstract of article is published in Zhurnal Prikladnoi Spektroskopii, Vol. 91, No. 2, p. 319, March–April, 2024.

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Thang, C.X., Lan, N.M.C.H.P., Van Tuan, P. et al. Structural and Optical Properties of Eu3+-DOPED Sr3Y2Ge3O12 as an Efficient Red Phosphor for WLED Application. J Appl Spectrosc 91, 463–471 (2024). https://doi.org/10.1007/s10812-024-01742-8

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  • DOI: https://doi.org/10.1007/s10812-024-01742-8

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