徐超,卢佃清,刘学东

• 1:淮海工学院理学院

摘要(Abstract)：

采用高温固相法制备了Sr0.96Al2O4:Eu0.02,Dy0.02,B0.08长余辉发光材料。利用XRD衍射仪、荧光分光光度计和亮度计分别研究两步退火工艺中初次退火温度对晶体结构、激发光谱、发射光谱和余辉衰减特性的影响。结果表明,随着样品初次退火温度的升高,DySr.陷阱中的电子浓度出现一峰值,而VO..陷阱中的电子浓度逐渐减小。初次退火为1150℃×2 h,第二次退火为1350℃×6 h的样品具有最大的DySr.陷阱中的电子浓度,且具有最大的时间衰减常数,这使该样品具有最好的长余辉特性。初次退火温度太高时,出现了AlEuO3晶相,DySr.陷阱中的电子浓度迅速降低。

关键词(KeyWords)： 两步退火工艺;铝酸盐;长余辉发光材料;电子陷阱

Abstract:

Keywords:

基金项目(Foundation): 江苏省高校自然科学研究计划项目(06KJD430014);; 淮海工学院校内科研课题资助项目(Z2011040)

作者(Author): 徐超,卢佃清,刘学东

DOI: 10.13289/j.issn.1009-6264.2012.s1.005

参考文献(References)：

• [1]Aitasalo T,DereńP,HlsJ,et al.Persistent luminescence phenomena in materials doped with rare earth ions[J].Journal of Solid State Chemistry,2003,171:114-122.
• [2]Hea Zhiyi,Wang Xiaojun,Yen W M.Investigation on charging processes and phosphorescent efficiency of SrAl2O4:Eu,Dy[J].Journal ofLuminescence,2006,119-120:309-313.
• [3]Han Sang Do,Singh Krishan C,Cho Tai Yeon,et al.Preparation and characterization of long persistence strontium aluminate phosphor[J].Journal ofLuminescence,2008,128:301-305.
• [4]Chang Yu Lun,Hsiang Hsing I,Liang Ming Tsai.Characterization of strontium aluminate phosphors prepared from milled SrCO3[J].CeramicsInternational,2009,35:1027-1032.
• [5]Fu Zuoling,Zhou Shihong,Yu Yingning,et al.Combustion synthesis and luminescence properties of nanocrystalline[J].Chemical Physics Letters,2004,395:285-289.
• [6]Kamiyanagi Yuji,Kitaura Mamoru,Kaneyoshi Masami.Temperature dependence of long-lasting afterglow in SrAl2O4:Eu,Dy phosphor[J].Journal ofLuminescence,2007,122-123:509-511.
• [7]Tang Tzu-piao,Lee Chih-ming,Yen Fu-cheng.The photoluminescence of SrAl2O4:Sm phosphors[J].Ceramics International,2006,32:665-671.
• [8]Avdeev Maxim,Yakovlev Sergey,Yaremchenko Aleksey A,et al.Transitions between P21,P63(3 A),and P6322 modifications of SrAl2O4 by in situhigh-temperature X-ray and neutron diffraction[J].Journal of Solid State Chemistry,2007,180:3535-3544.
• [9]Saines Paul J,Elcombe Margaret M,Kennedy Brendan J.Lanthanide distribution in some doped alkaline earth aluminates and gallates[J].Journal ofSolid State Chemistry,2006,179:613-622.
• [10]Qiang R F,Xiao Siguo,Ding J W,et al.Red emission in B3+-and Li+-doped SrAl2O4:Eu3+phosphor under UV excitation[J].Journal ofLuminescence,2009,129:826-828.
• [11]朱胜超.稀土激活的多颜色长余辉发光材料的特性研究[D].河北大学,2003:12-16.ZHU Sheng-chao.The study on the polychrome long afterglow phosphors activated by rare earth elements[D].Hebei University,2003:12-16.
• [12]崔彩娥,王森,黄平.Dy含量对红色长余辉发光材料Sr3A12O6:Eu2+,Dy3+性能的影响[J].物理学报,2009,58(5):3565-3571.CUI Cai-E,WANG Sen,HUANG Ping.Effect of Dy on properties of red long-afterglow phosphor Sr3A12O6:Eu2+,Dy3+[J].Acta Physica Sinica,2009,58(5):3565-3571.
• [13]杨华明,李云龙,唐爱东,等.固相合成Co3O4纳米晶及晶化动力学研究[J].材料热处理学报,2005,26(4):1-5.YANG Hua-ming,LI Yun-long,TANG Ai-dong,et al.Solid state synthesis of cobalt oxide(Co3O4)nanocrystallites and crystallization kinetics duringthermal treatment[J].Transactions of Materials and Heat Treatment,2005,26(4):1-5.
• [14]LüXingdong,Zhong Minjuan,Shu Wangen,et al.Alumina encapsulated SrAl2O4:Eu2+,Dy3+phosphors[J].Powder Technology,2007,177:83-86.
• [15]DU Hai-yan,LI Geng-shen,SUN Jia-yue.Preparation of non-grinding long after glow SrAl2O4:Eu2+,Dy3+material by microwave combustion method[J].Journal of Rare Earths,2007,25(1):19-22.
• [16]孙家跃,杜海燕,胡文祥.固体发光材料[M].北京:化学工业出版社,2003:545-549.
• [17]LXing-dong,ZHONG Min-juan,SHU Wan-gen,et al.Alumina encapsulated SrAl2O4:Eu2+,Dy3+phosphors[J].Powder Technology,2007,177:83-86.
• [18]徐叙瑢,苏勉曾.发光学与发光材料[M].北京:化学工业出版社,2004:109-102.

文章评论(Comment)：