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Enhanced luminescence and afterglow by heat-treatment in reducing atmosphere to synthesize the Gd3Al2Ga3O12: Ce3+ persistent phosphor for AC-LEDs
Liu, Pu; Liu, Yongfu; Cui, Cai'e; Wang, Lei; Qiao, Jianwei; Huang, Ping; Shi, Qiufeng; Tian, Yue; Jiang, Haochuan; Jiang, Jun
2018
发表期刊JOURNAL OF ALLOYS AND COMPOUNDS
卷号731页码:389-396
摘要Yellow-emitting persistent phosphor Gd3Al2Ga3O12:Ce3+ (GAGG:Ce3+) was synthesized by two-step solid-state reactions. The phase evolution, luminescence, persistent luminescence, and thermal stabilities of GAGG:Ce3+ sintered in an O-2 atmosphere and annealed in a CO reducing atmosphere at different temperatures were investigated. Comparing with the samples sintered only in O-2, the samples annealed in CO show higher luminescence and afterglow and better thermal stability. Under 445 nm excitation, the luminescence and afterglow of GAGG:Ce3+ are similar with each other, displaying a broad yellow emission with a peak around 545 nm. By optimizing the sintering process, the internal quantum efficiency can reach as high as 71.3%. The time tau(80) is about 15 ms, which is much longer than 0.4 ms required for alternating current (AC)-LEDs. These results indicate the promising application of the GAGG:Ce3+ persistent phosphor for reducing flicker from AC-LEDs. (C) 2017 Elsevier B.V. All rights reserved.
关键词Solid-state Reaction Green Phosphor White Leds Blue-light Photoluminescence Performance Property Glow Band
学科领域Physics
语种英语
文献类型期刊论文
条目标识符http://ir.nimte.ac.cn/handle/174433/16871
专题2018专题
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GB/T 7714
Liu, Pu,Liu, Yongfu,Cui, Cai'e,et al. Enhanced luminescence and afterglow by heat-treatment in reducing atmosphere to synthesize the Gd3Al2Ga3O12: Ce3+ persistent phosphor for AC-LEDs[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2018,731:389-396.
APA Liu, Pu.,Liu, Yongfu.,Cui, Cai'e.,Wang, Lei.,Qiao, Jianwei.,...&Jiang, Jun.(2018).Enhanced luminescence and afterglow by heat-treatment in reducing atmosphere to synthesize the Gd3Al2Ga3O12: Ce3+ persistent phosphor for AC-LEDs.JOURNAL OF ALLOYS AND COMPOUNDS,731,389-396.
MLA Liu, Pu,et al."Enhanced luminescence and afterglow by heat-treatment in reducing atmosphere to synthesize the Gd3Al2Ga3O12: Ce3+ persistent phosphor for AC-LEDs".JOURNAL OF ALLOYS AND COMPOUNDS 731(2018):389-396.
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