当前位置：文档之家 › Fluorine sites in glasses and transparent glass-ceramics of the system Na2O K2O Al2O3 SiO2 BaF2

Fluorine sites in glasses and transparent glass-ceramics of the system Na2O K2O Al2O3 SiO2 BaF2

  • 格式：pdf
  • 大小：552.70 KB
  • 文档页数：6

Fluorinesitesinglassesandtransparentglass-ceramicsofthesystem

Na2O/K2O/Al2O3/SiO2/BaF2

ChristianBockera,n,FranciscoMun˜ozb,AliciaDura´nb,ChristianR¨ussela

aOtto-Schott-Institut,JenaUniversity,Fraunhoferstr.6,07743Jena,GermanybInstitutodeCera´micayVidrio(CSIC),Kelsen5,28049Madrid,Spain

articleinfo

Articlehistory:Received2September2010Receivedinrevisedform17November2010Accepted1December2010Availableonline7December2010

Keywords:NMRCrystalgrowthCrystallizationNanocrystalsSilicateglassesabstract

Thetransparentglass-ceramicsobtainedinthesilicatesystemNa2O/K2O/SiO2/BaF2showhomogeneouslydispersedBaF2nanocrystalswithanarrowsizedistribution.TheX-raydiffractionandthenuclearmagneticresonancespectroscopywereappliedtoglassesandtherespectiveglass-ceramicsinordertoclarifythecrystallizationmechanismandtheroleoffluorineduringcrystallization.Withanincreasingannealingtime,theconcentrationandalsothenumberofcrystalsremainapproximatelyconstant.Withanincreasingannealingtemperature,thecrystallinefractionincreasesuntilasaturationlimitisreached,whilethenumberofcrystalsdecreasesandthesizeofthecrystalsincreases.FluorideintheglassynetworkoccursasAl–F–Ba,Al–F–NaandalsoasBa–Fstructures.ThelatteraretransformedintocrystallineBaF2andfluorideisremovedfromtheAl–F–Ba/Nabonds.However,somefluorineisstillpresentintheglassyphaseafterthecrystallization.&2010ElsevierInc.Allrightsreserved.

1.Introduction

Glass-ceramicscontainingfluoridecrystallitesarevaluable

materialsforphotonicapplications.Especially,alkalineearth

fluoridecrystalsareknownasgoodhostmaterialsforrareearth

ionssuchasEr3+orEu3+[1–3].Thesedopedglass-ceramicsare

advantageousforsomeapplications,becausetheycanbeeasily

processedbytheviscousflow,e.g.drawntoafiber.After

subsequentannealingandcrystallizationoftheglasses,optical

properties,e.g.fluorescencelifetimesandluminescenceorup-

conversionefficiencies[4–6].Thesematerialsmightbeused,for

example,asopticalamplifiersorinfiberlasers[7,8].Inorderto

obtaintransparentglass-ceramicsi.e.toavoidlightscattering,the

sizeofthecrystalsmustbemuchsmallerthanhalfofthe

wavelengthoftheusedlight.

Theformationofnanocrystalsinamulti-componentglass

systemcontainingBaF2orCaF2wasrecentlyexplainedbythe

formationofadiffusionbarrieraroundtheformingcrystals[9–11].

Thenanocrystalswerehomogeneouslydistributedwithinthe

glassmatrixandpossessedanarrowcrystallitesizedistribution

[12].Wheninmulti-componentglasses,ametalfluoridecompo-

nentiscrystallized,alayeraroundthecrystalisdepletedinthe

respectivecomponents.Sinceinthecaseofmetalfluorides,these

compoundsactasthenetworkmodifyingcomponent;thisleadsto

anenrichmentinnetworkformers,andhenceincreasestheviscosity.Thislayermightactasadiffusionbarrierandhinders

furthercrystalgrowth[13,14].

Theroleoffluorineinaluminosilicateglassnetworkswas

studiedbyseveralresearchers[15–19].Bymeansofsolid-state

nuclearmagneticresonance(NMR),itispossibletostudythelocal

environmentoftheinvolvedatomsinthecrystallizationprocess.

AnNMRoffluorine-containingaluminosilicateglasseshasshown

thatfluorineatomsarepreferentiallycoordinatedtoaluminium

insteadofsilicon,duetotheirtendencytobondwithsmalland

highlychargedcations[19].Generally,thelargertheionicfield

strengthofthemodifiercations,thehigheristheirabilitytoform

chemicalbondstofluorine[20].

Inthispaper,astudyontheBaF2concentrationandthe

incorporationoffluorineduringthecourseofBaF2crystallization

inglass-ceramicsinthesystemNa2O/K2O/Al2O3/SiO2/BaF2through

X-raydiffraction(XRD)andNMRisreported.

2.Experimentalprocedures

Glasseswiththecompositions(100Àx)(2Na2OÁ16K2OÁ8Al2O3Á

74SiO2)ÁxBaF2(inmol%),withx¼0,1,2,3,4,5and6,weremelted

fromreagentgradeNa2CO3,K2CO3,BaF2,Al(OH)3andSiO2(quartz)

inbatchesof200g.Thecoveredplatinumcruciblewasplacedina

furnaceat15901Candkeptfor1.5h.Themeltswerecastontoa

copperblockandweresubsequentlyputintoafurnacepreheated

to4501C.Thenthefurnacewasswitchedoffandtheglasswas

allowedtocooltoroomtemperature.Duringmelting,fluorine

isContentslistsavailableatScienceDirect

journalhomepage:www.elsevier.com/locate/jsscJournalofSolidStateChemistry

0022-4596/$-seefrontmatter&2010ElsevierInc.Allrightsreserved.

doi:10.1016/j.jssc.2010.12.001nCorrespondingauthor.Fax:+493641948502.E-mailaddress:christian.bocker@uni-jena.de(C.

Bocker).JournalofSolidStateChemistry184(2011)405–410lostduetoanunavoidableevaporation.Thefluorineconcentration

wasdeterminedbyawet-chemicalmethod[21],X-rayfluores-

cenceandenergy-dispersiveX-rayspectrometry.Ontheaverage

about(3473)%offluorinewaslostduringmelting.Wetchemical

analysesandenergy-dispersiveX-rayspectrometrywereingood

agreement(710%).

Theglasseswith6mol%BaF2wereannealedattemperaturesin

therange500–6001C,for20h.Forthesamplesannealedat500and

5401C,theannealingtimewasvariedintherange5–160h.The

合集下载

玻璃的光学性能

玻璃的光学性能

合 肥 学 院

Hefei University

翻译文献：玻璃的光学性能

课程名称：金属学与热处理

指导教师：谢劲松

系别/班级：14粉体材料科学与工程一班

姓名（学号）：罗成1403011012 摘要：无机材料指由无机物单独或混合其他物质制成的材料。通常指由硅酸盐、铝酸盐、硼酸盐、磷酸盐、锗酸盐等原料和/或氧化物、氮化物、碳化物、硼化物、硫化物、硅化物、卤化物等原料经一定的工艺制备而成的材料。

Abstract: inorganic materials by inorganic material alone or mixed with

other materials. Usually made of silicate, aluminate, borate, phosphate and

germanate and / or raw materials such as oxides, nitrides, carbides, borides,

silicides, sulfides, halides as raw materials prepared by materials.

玻璃是由二氧化硅和其他化学物质熔融在一起形成的（主要生产原料为：纯碱、石灰石、石英）。在熔融时形成连续网络结构，冷却过程中粘度逐渐增大并硬化致使其结晶的硅酸盐类非金属材料。普通玻璃的化学组成是Na2SiO3、CaSiO3、SiO2或Na2O·CaO·6SiO2等，主要成分是硅酸盐复盐，是一种无规则结构的非晶态固体。广泛应用于建筑物，属于混合物。另有混入了某些金属的氧化物或者盐类而显现出颜色的有色玻璃，和通过物理或者化学的方法制得的钢化玻璃等。有时把一些透明的塑料（如聚甲基丙烯酸甲酯）也称作有机玻璃。

The glass is made of silicon dioxide and other chemical substances fused together

Gd3_+_

Gd3_+_

第43卷第4期2024年4月硅　酸　盐　通　报

BULLETINOFTHECHINESECERAMICSOCIETYVol.43　No.4

April,2024

Gd3+/Ce3+

对Tb3+

掺杂氟氧化物玻璃

发光敏化作用的影响

刘瑞旺,王宏杰,符　博,贾亚男,周建欣,魏　晋

(中国建筑材料科学研究总院有限公司石英与特种玻璃研究院,建筑材料行业石英玻璃重点实验室,北京　100024)

摘要:本文采用高温熔融法制备了Gd/Tb、Gd/Ce、Gd/Ce/Tb掺杂的SiO

2-B

2O

3-BaF

2组分氟氧化物玻璃,通过测试

X射线衍射光谱确定了其物相,通过测试其不同波段激发下的荧光光谱研究了不同Gd

2O

3掺量下Tb3+

的发光性

能,并确定了Gd

2O

3更精确的最佳掺量范围。此外,文中通过改变气氛制备了Gd/Ce/Tb共掺杂氟氧化物玻璃,对

比研究了Gd3+

和Ce3+

对Tb3+

的敏化作用。结果表明,本文所制备的氟氧化物玻璃都呈稳定的玻璃态;Gd3+

和

Ce3+

对Tb3+

的发光都具有敏化作用,且Gd

2O

3掺量为7%(摩尔分数,下同)时敏化效果相较于其他掺量最为显著,

超出7%则造成猝灭;Ce

2O

3掺入玻璃后以Ce3+

和Ce4+

两种价态共存,在还原气氛下掺入相较于空气气氛下掺入

更容易保持Ce3+

状态,而且Ce3+

对Tb3+

的发光具有敏化作用,Ce4+

会抑制Tb3+

的发光。

关键词:Tb3+

发光特性;Gd/Ce/Tb共掺;Ce3+/Ce4+

价态;氟氧化物玻璃;能量传递

中图分类号:TQ171 文献标志码:A 文章编号:1001-1625(2024)04-1335-06

EffectofGd3+/Ce3+onPhotosensitizationofTb3+

DopedFluorineOxideGlass

LIURuiwang,WANGHongjie,FUBo,JIAYanan,ZHOUJianxin,WEIJin

(KeyLaboratoryofQuartzGlassintheBuildingMaterialsIndustry,Quartz&SpecialGlassesInstitute,

氟氧化物纳米相玻璃陶瓷Tb(0.7)Yb(5)∶FOV的合作下转换发光

氟氧化物纳米相玻璃陶瓷Tb(0.7)Yb(5)∶FOV的合作下转换发光

氟氧化物纳米相玻璃陶瓷Tb(0.7)Yb(5)∶FOV的合作下转换发光

陈晓波;杨国建;丁卉芬;于春雷;胡丽丽;王水锋;李崧

【摘 要】报道了氟氧化物纳米相玻璃陶瓷Tb(0.7)Yb(5)∶FOV的红外量子剪裁研究,测量了从可见到红外的荧光发光光谱、激发谱、和荧光寿命,分析了{1([5 D4→7

F6](Tb3+),2([2 F7/2→2 F5/2] (Yb3+)}的红外量子剪裁现象,发现了487.0nm光激发5 D4能级和378.0nm光激发(5 D3,5 G6)能级的理论量子剪裁效率ηx％Yb依次分别为121.35％和136.27％.首次发现了一种新颖的合作(共协)下转换发光现象{2([(5 D3,5 G6)→5 D4](Tb3+),1([2 F7/2→2 F/2](Yb+)},即首次发现施主Tb3+离子释放两个小能量光子[(5 D3,5 G6)→5 D4]的能量,导致出现一个受主Yb3+的[2 F5/2→2 F7/2]的中等能量的光子.%The present article reports the infrared

quantum cutting study of the nanophase oxyfluoride vitroceramics Tb(0.

7)Yb (5. 0) : FOV. The visible to infrared fluorescence emission spectra,

excitation spectra and fluorescence lifetime were measured carefully. The

infrared quantum cutting phenomenon {l([5D4 →7F6](Tb3+), 2([zF7/2

→2F5/2](Yb3+)} was analyzed based on the above experiments. It was

Tm^(3+)Ho^(3+)共掺含BaF_(2)纳米晶氟硅酸盐玻璃陶瓷2μm发光性能

Tm^(3+)Ho^(3+)共掺含BaF_(2)纳米晶氟硅酸盐玻璃陶瓷2μm发光性能

第 42 卷 第 1 期

2021 年 1 月发光学报

CHINESE JOURNAL OF LUMINESCENCEVol. 42 No. 1

Jan. , 2021

文章编号：1000-7032(2021)01-0037-07

Tm3

+/Ho3

+共掺含

BaF

2纳米晶

氟硅酸盐玻璃陶瓷

2 pm发光性能

傅燕青

1,康世亮

1*,关尚升

1,郭跃琪S陈 旦

1,

刘雪云

1,徐铁峰心,林常规

1*

(1.宁波大学高等技术研究院红外材料及器件实验室，浙江宁波315211； 2.宁波海洋研究院，浙江宁波315211)

摘要

：由于在人眼安全、光电探测、中红外超连续谱产生等方面的应用,2.0帆

波段中红外激光器引起了人

们越来越广泛的关注。本文采用熔融-淬冷法制备了含BaF2纳米晶、Tm3+离子单掺及Ho"/Tm"共掺的

85SiO2-7.5KF-7.5BaF2(SKB)玻璃陶瓷，表征了样品的拉曼光谱、吸收光谱、808 nm泵浦下在2.0 ^m处的发

光性能，得到了实验过程中Ho"/Tm"的最佳掺杂浓度。结果发现,Ho2O

3、Tm2O3掺杂浓度均为1.0%时，

2.0帆 处Ho3+ ：1—工发射峰强度达到最大，并对Ho3 +和Tm3 +之间的能量转移机制进行了详细分析和讨

论。研究表明,Tm3 + /Ho3 +共掺的BaF2纳米晶SiO2-KF-BaF2玻璃陶瓷有望成为2. 0 ^m波段中红外固体激光

器的增益基质。

关 键词：硅酸盐玻璃；稀土离子掺杂；2.0 发光；BaF2；中红外发光

中图分类号：O482.31 文献标识码：A DOI： 10. 37188/CJL. 20200310

Luminescence Properties of Tm3 + /Ho3+ Doped BaF2

Nanocrystalline Fluorosilicate Glass Ceramics at 2.0 pm

FU Yan-qing1 , KANG Shi-liang1