Stabilization of Metastable Nano-Size β-Zn2SiO4:Mn Emitting Yellow Luminescence in Silica Glass

Tomoko Akai; Masaki Murakami; Takeyuki Uchida; Masaru Yamashita

doi:10.4028/www.scientific.net/MSF.886.102

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HomeMaterials Science ForumMaterials Science Forum Vol. 886Stabilization of Metastable Nano-Size β-Zn2SiO4:Mn...

Stabilization of Metastable Nano-Size β-Zn₂SiO₄:Mn Emitting Yellow Luminescence in Silica Glass

Abstract:

We report a simple process of stabilizing metastable β-Zn₂SiO₄:Mn nanocrystals in amorphous silica. Zn and Mn ions were incorporated in mesoporous silica by immersing aqueous solution of Mn²⁺ and Zn²⁺, and the mesoporous silica was sintered at 1000-1100oC in reducing atmosphere. β-Zn₂SiO₄:Mn were formed along with α-Zn₂SiO₄:Mn in sintered mesoporous silica when diameter of pore is as small as 2.4nm. Due to the formation of β-Zn₂SiO₄:Mn, photoluminescence (PL) spectra exhibited both green and yellow emission originated from α-and β-Zn₂SiO₄:Mn, respectively. Relative intensity of the two emission was changed by changing heat treatment time and temperature. These results imply that this simple process is promising to stabilize nanocrystal of β-Zn₂SiO₄:Mn emitting yellow luminescence.

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Periodical:

Materials Science Forum (Volume 886)

Pages:

102-107

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.886.102

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Online since:

March 2017

Authors:

Tomoko Akai*, Masaki Murakami, Takeyuki Uchida, Masaru Yamashita

Keywords:

Mesoporous Silica, Photoluminescence, Zn₂SiO₄:Mn

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