沉淀法合成YAG-Ce熒光粉.pdf

1、河北大學碩士學位論文沉淀法合成YAG:Ce熒光粉姓名：趙起申請學位級別：碩士專業(yè)：光學工程指導教師：李志強200906AbstractAbstractYttriumAluminumGarnet(YAG)waswidelyusedformatrixinluminescenceduetoitsstabilit)runderhi曲radiationstrengthandelectronbombardmentInthisthesis，YAG：C

2、ephosphorWassynthesizedbyprecipitationmethod，itsluminescencemechanismWasanalysed，andtheinfluenceofdopingcontentofactivatorion，reactiontemperatureanddifferentprecipitationreagentratioontheluminescentpropertieswerealsobeen

3、discussedItisindicatedthatYAG：CephosphorWaSsynthesizedat900。C，andtheluminescenceintensityreachedmaximumwhen5％(molefraction)Ce3WasdopedTherusultantwhichWasglobalWaSpureYAGphasepowderandthegranularityWasaboutllamUsingultra

4、sonicequipmenttOtreattheprecursorofthesamplecarlwellimprovethedispersionofthephosphorandCanincreasethecolorrenderingandluminescentpropertiestosomedegreeYAG：CephosphorWassynthesizedbychangingthereactiontempertureItWasindi

5、catedthattheluminescenceintensityincreasedwiththeraisingtemperatureThisarticlediscussestheinfluenceofmixedprecipitantbaSedonprecipitationmethodTheresultsshowedtheluminescenceintensityofthesampleWashigherwhenusingNH4HC03N

6、H3‘H20aspreeipitantsthanthatusingasingleprecipitantandhadabetterdistributionThisprocessimprovestheluminescenceperformanceofthematerialtOacertaindegree，andhascertainreferencevalueonthepreparationofhi曲qualitylight—emitting