| 分步滴定法制备YAG荧光粉 |
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| 引用本文： | 李帅谋,关荣锋,李勤勤.分步滴定法制备YAG荧光粉[J].材料导报,2011,25(8). |
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| 作者姓名： | 李帅谋 关荣锋 李勤勤 |
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| 作者单位： | 河南理工大学材料科学与工程学院; |
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| 基金项目： | 河南省重点科技攻关项目(072102240027) |
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| 摘 要： | 在室温下,采用分步滴定法得到高亮度LED所用的Y3-x-yGdxCeyAl5O12荧光粉,并以0.1mol/L的碳酸氢铵和氨水为沉淀剂,将其分步滴入金属盐离子混合液中,研究了s杂Gd离子对荧光粉发光性能的影响。结果表明,以Ce为激活中心,最佳掺量为0.06,加入助熔剂后,荧光粉的发光性能提高了50%左右;随着Gd3+取代量的增加,荧光粉样品发射光谱的峰值波长可红移5~10nm,同时,Gd3+对发光中心Ce3+的影响增强,当取代浓度x为0.1时发光最强。XRD测试结果表明Gd离子的s入对YAG相的形成并没有影响。
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| 关 键 词： | 发光 温度依赖 荧光粉 光谱调控 |
Preparation of YAG: Ce Yellow Phosphor by Step-by-Step Precipitation Method |
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| LI Shuaimou,GUAN Rongfeng,LI Qinqin.Preparation of YAG: Ce Yellow Phosphor by Step-by-Step Precipitation Method[J].Materials Review,2011,25(8). |
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| Authors: | LI Shuaimou GUAN Rongfeng LI Qinqin |
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| Affiliation: | LI Shuaimou,GUAN Rongfeng,LI Qinqin(School of Materials Science and Engineering,Henan Polytechnic University,Jiaozuo 454000) |
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| Abstract: | At room temperature,the high-brightness LED with Y3-x-yGdxCeyAl5O12yellow phosphor was obtained by step-by-step precipitation method,and using 0.1mol/L ammonium bicarbonate and aqueous ammonia as the precipitation agent.The effect of doping Gd3+ ions in Y3-x-yGdxCeyAl5O12 phosphor on luminescent enhaucement was studied.The results show that the relative intensity increases with increasing content of Ce,and achieving the maximum value is y=0.06,By doping flux,phosphor light-emitting performance improves over... |
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| Keywords: | Luminescence temperature dependence phosphor spectrum adjustment |
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