|
OALib Journal期刊
ISSN: 2333-9721
费用：99美元
|
|
|
|
y3al5o12基质中dy3+的浓度猝灭机制
DOI: doi:10.3969/j.issn.1671-7627.2012.02.004, PP. 16-20
Keywords: 浓度猝灭,光致发光,溶胶凝胶/燃烧合成法,钇铝石榴石
Abstract:
采用溶胶凝胶/燃烧合成法制备不同掺杂浓度的dy:y3al5o12（yag)发光粉体。分析基质晶体结构、dy3+掺量对dy3+光致发光性能的影响，并探讨dy3+在y3al5o12基质中的自身浓度猝灭机制。根据激发光谱，dy:yag的主激发峰位置在353nm，对应dy3+的6h15/2→6p7/2跃迁。在dy:yag晶体结构中，dy3+取代y3+的位置具有d2对称性，故dy:yag的蓝光发射强度要高于黄光发射强度，且dy3+最佳摩尔分数为0.02；dy3+的4f9/2→6h15/2、6h13/2跃迁发射的浓度猝灭机制均为相邻中心的电偶极电偶极相互作用引起的交叉弛豫(4f9/2+6h15/2→6h9/2+6f3/2)所造成的。
| [1] | 徐晓东，赵志伟，宋平新，等.cr,yb:yag晶体的光谱性质[j].无机材料学报，2004,19(6):1427-1430.
|
| [2] | 王勇，李苹，王介强.稀土掺杂yag荧光粉制备方法的研究进展[j].山东化工，2007,36(2)：22-25.
|
| [3] | kitykiv,wasylakj,kucharskij,etal.pbo-bi2o3-ga2o3-baody3+glassesforirluminescence[j].journalofnon-crystallinesolids,2002,297:285-289.
|
| [4] | xiuzl,liusw,renm,etal.preparationandphotoluminescenceofdy3+dopedsr5(po4)3clnanorods[j].journalofalloysandcompounds,2006,425:261-263.
|
| [5] | ravichandrand,royr,chakhovskoiag,etal.fabricationofy3al5o12:euthinfilmsandpowdersforfieldemissiondisplayapplications[j].journalofluminescence,1999,71:291-297.
|
| [6] | ozawal.determinationofselfconcentrationquenchingmechanismsofrareearthluminescencefromintensitymeasurementsonpowderedphosphorscreens[j].journaloftheelectrochemicalsociety,1979,126(1):106-109.
|
| [7] | dexterdl,schulmanjh.theoryofconcentrationquenchingininorganicphosphors[j].journalofchemicalphysics,1954,22(6):1063-1071.
|
| [8] | 徐叙瑢，苏勉曾.发光学与发光材料[m].北京：化学工业出版社,2004:47.
|
| [9] | 侯嫣嫣，杨红侠，林海，等.稀土硼酸盐玻璃中三价镝离子的光谱分析[j].中国稀土学报,2005,23(6):749-707.
|
| [10] | mulaj,bonamvr,kiwanj,etal.combustionsynthesisandluminescentpropertiesofnanoandsubmicrometersizegd2o3:dy3+phosphorsforwhiteleds[j].internationaljournalofappliedceramictechnology,2011,8(4):709-717.
|
| [11] | mulaj,bonamvr,kiwanj,etal.greenishyellowemissionfromdy3+dopedy2o3nanophosphors[j].journaloftheamericanceramicsociety,2010,93(2):494-499.
|
| [12] | 尹民，krupajc.dy3+:tho2的选择激发光谱和能级结构[j].光谱学与光谱分析，2001，21(4):417-419.
|
| [13] | heyesal,seefeldts,feistjp.twocolourphosphorthermometryforsurfacetemperaturemeasurement[j].opticsandlasertechnology,2006,38:257-265.
|
| [14] | raghuvanshigs,bisthd,kandpalhc.luminescencecharacteristicsofdy3+indifferenthostmatrices[j].journalofphysicsandchemistryofsolids,1982,43(8):781-783.
|
| [15] | ratnakaramyc,naidudt,chakradharrps.spectralstudiesofsm3+anddy3+dopedlithiumcesiummixedalkaliborateglasses[j].journalofnon-crystallinesolids,2006,352:3914-3922.
|
| [16] | 张杰，乔自文，林崔昆，等.β-ga2o3:dy3+纳米棒束的制备和光致发光性质[j].中国稀土学报,2005,23(5):572-575.
|
Full-Text
|
|
Contact Us
service@oalib.com QQ:3279437679 
WhatsApp +8615387084133
|
|
