Cathodo- and photoluminescence of (H3O)Al3(SO4)2(OH)6:Cu synthesized under hydrothermal conditions

Copper-doped hydronium alunite ((H3O)Al3(SO4)2(OH)6:Cu) was synthesized under hydrothermal conditions (240 °C, 60 min) from copper nitrate and aluminium nitrate solutions mixed with elemental sulfur. SEM and XRD measurements revealed that pseudocubic crystals of hydronium alunite and a small amount...

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Published in:IOP conference series. Materials Science and Engineering 2011-03, Vol.21 (1), p.012004
Main Authors: Kuroki, Y, Iwata, N, Hatsuse, T, Okamoto, T, Takata, M
Format: Article
Language:English
Subjects:
Aluminum nitrate
Alunite
Boehmite
Cathodoluminescence
Copper
Electron beams
Excitation
Phosphors
Photoluminescence
Synthesis
Ultraviolet radiation
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Iwata, N
Hatsuse, T
Okamoto, T
Takata, M
description Copper-doped hydronium alunite ((H3O)Al3(SO4)2(OH)6:Cu) was synthesized under hydrothermal conditions (240 °C, 60 min) from copper nitrate and aluminium nitrate solutions mixed with elemental sulfur. SEM and XRD measurements revealed that pseudocubic crystals of hydronium alunite and a small amount of boehmite rods coexisted in the resultant product. XPS measurements revealed the presence of monovalent copper (Cu+). Blue cathodoluminescence and photoluminescence were observed at about 414 and 419 nm, respectively. Two photoluminescence excitation bands were found at 295 and 325 nm. The excitation and emission processes for photoluminescence may involve the 3d10↔3d94s1 transition of the Cu+ ion. (H3O)Al3(SO4)2(OH)6:Cu has the potential to be used as a blue luminescent phosphor for both electron beam and ultraviolet irradiation.
doi_str_mv 10.1088/1757-899X/21/1/012004
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1757-899X
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source Full-Text Journals in Chemistry (Open access); Publicly Available Content (ProQuest)
subjects Aluminum nitrate
Alunite
Boehmite
Cathodoluminescence
Copper
Electron beams
Excitation
Phosphors
Photoluminescence
Synthesis
Ultraviolet radiation
title Cathodo- and photoluminescence of (H3O)Al3(SO4)2(OH)6:Cu synthesized under hydrothermal conditions
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