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Synthesis and Photoluminescence Properties of SrLaAlO4: Ti Green-Emitting Phosphor
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Synthesis and Photoluminescence Properties of SrLaAlO4: Ti Green-Emitting Phosphor

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Abstract:

Ti-doped SrLaAlO4 green-emitting phosphor was synthesized via solid-state reactions in air and N2 atmosphere. Sample heated in air showed no emission, however, sample heated in N2 showed broad green emission around 492 nm and broad near-infrared emission around 950 nm by 321 nm near-ultraviolet excitation. XPS measurement and UV-Vis diffuse reflectance spectra suggest that Ti in the sample was reduced to Ti3+ state when the sample was heated in N2. Possible emission mechanism of the sample can be explained as O2-–Ti3+ charge-transfer transition.

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Periodical:

Materials Science Forum (Volume 868)

Pages:

1-5

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.868.1

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Online since:

August 2016

Authors:

Naoto Watanabe*, Yamato Hayashi, Jun Fukushima, Hirotsugu Takizawa

Keywords:

Charge-Transfer Excitation, Green Emission, Ti-Doped Phosphor, White LED

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© 2016 Trans Tech Publications Ltd. All Rights Reserved

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