Luminescence Intensity Enhancement of Copper Doped Hydronium Alunite Synthesized under Hydrothermal Conditions Using Sulfates Solution

Yuichiro Kuroki; Takashi Hatsuse; Tomoichiro Okamoto; Masasuke Takata

doi:10.4028/www.scientific.net/AST.90.127

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HomeAdvances in Science and TechnologyAdvances in Science and Technology Vol. 90Luminescence Intensity Enhancement of Copper Doped...

Luminescence Intensity Enhancement of Copper Doped Hydronium Alunite Synthesized under Hydrothermal Conditions Using Sulfates Solution

Abstract:

A novel phosphor, copper doped hydronium alunite ((H₃O)Al₃(SO₄)₂(OH)₆:Cu), exhibiting a blue photoluminescence peak at a wavelength of 420 nm was successfully synthesized from aluminum and copper sulfates solution under hydrothermal condition (240 °C, 60 min). The measurement of XRD revealed that the obtained products were single phase with a crystal structure of (H₃O)Al₃(SO₄)₂(OH)₆. Luminescence intensity of (H₃O)Al₃(SO₄)₂(OH)₆:Cu synthesized from sulfates solution was 6.2 times higher than that from an aluminum nitrate solution mixed with an elemental sulfur and a copper nitrate solution. The increase of luminescence intensity was resulted from an improvement of the crystallinity of (H₃O)Al₃(SO₄)₂(OH)₆.

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Periodical:

Advances in Science and Technology (Volume 90)

Pages:

127-132

DOI:

https://doi.org/10.4028/www.scientific.net/AST.90.127

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Online since:

October 2014

Authors:

Yuichiro Kuroki*, Takashi Hatsuse, Tomoichiro Okamoto, Masasuke Takata

Keywords:

Blue Photoluminescence, Copper Ion, Hydronium Alunite, Hydrothermal Synthesis

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* - Corresponding Author

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