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Title: Flicker Suppression of AC Driven White LED by Yellow Persistent Phosphor of Ce³⁺-Cr³⁺ Co-doped Garnet
Authors: Asami, Kazuki
Ueda, Jumpei
Tanabe, Setsuhisa
Author's alias: 上田, 純平
田部, 勢津久
Issue Date: 2017
Publisher: Illuminating Engineering Society of Japan
Journal title: Journal of Science and Technology in Lighting
Volume: 41
Start page: 89
End page: 92
Abstract: The alternative current driven light emitting diode (AC-LED) lighting system has attracted a great deal of attention because of the high luminous efficiency and the simple electric circuit. However, this system causes the unacceptable flicker due to rapid fluctuations in the voltage of the power supply. In order to compensate the flicker effect in AC-LED, we proposed the use of yellow persistent luminescent garnet phosphors. The time evolution of luminescence intensity measurement of Ce³⁺-Cr³⁺ co-doped Gd₃Al₂Ga₃O₁₂ phosphor is calculated and showed to be about 60%. This result demonstrated that persistent phosphor is expected to solve the problem of flicker caused in AC-driven LED lighting system.
Rights: © 2017 The Illuminating Engineering Institute of Japan
発行元の許可を得て掲載しています。
本稿の二次利用を禁止します。
URI: http://hdl.handle.net/2433/255624
DOI(Published Version): 10.2150/jstl.IEIJ160000599
Appears in Collections:Journal Articles

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