BaAl-,12-O-,19--Mn系列發(fā)光材料的制備及性能研究.pdf

1、蘭州大學碩士學位論文BaAlO:Mn系列發(fā)光材料的制備及性能研究姓名：王佳申請學位級別：碩士專業(yè)：材料物理與化學指導教師：王育華20050501蘭州大學硪士學位論文AbstractMn2activatedalkaliearthaluminatephosphor(BaAIl2019：Mn)hasbecomeoneofthemostimportantgreenphosphorsforPDPapplicationduetoitsgoodlum

2、inescentefficiencyundervacuumultraviolet(vuvlexcitationComparedwitllZa2Si04：MnwhichiscurrentlyusedinPDPasgreenphosphorBaAll20ig：Mnhasgoodstabilitygoodcolorpurityandmoleshorterdecaytime，buttheloweremissionintensityisitsmo

3、stsignificantdrawbackTherefore，improvementofthelumineseeutintensityhasveryimportantsignificanceoilBaAlnOw：MnforpracticaluseInthispresentationdifferentmethodssuchassynthesis，dopingotherionsandformingsolidsolution，wereexpl

4、oitedtoinvestigatetheeffectsonthephotoluminesrenceofBaAIL2019：MnphosphorThemajorworksweresuⅡⅡ謝zedinthefollowing：(1)SinglephaseofBaAll20lCMnphosphorwassynthesizedat1300“(2byfluxmethod，thesynthesistemperaturewas200“(2lower

5、thanthatoftraditionalsolidstatereactionTheaspreparedphosphorshowedhighercrystallizationandstrongeremissionintensitythanthesamplederivedfiomsolidstatereaction。TheVUVexcitationspectrumwasabroadbandpcakedat159nmcorrespondin

6、gtohostabsorptionTheemissionspectrumunder147nmexcitationwasabandrmkedatabout516nm(2)Someamountsofboronion$wereintroducedintoBaAIl20Ig：M11lattireandtheinfluence011crystalstlalctureandphotoluminescencewasinvestigatedAftert

7、hedopingofB，theluminescentintensitywasdecreasedandthelatticeparametersbecamesmallerwhichindicatedthatBionssubstitutedforpartsoftheAIions。(3)ThestructureandphotoluminescenceofMn2activated(1一x)BaAl=2019一xBaMgAlt00i7(0盤S1)s

8、olidsolutionswerestudiedTheresultsrevealedthatsolidsolutionscouldbeformedbetweenwithtwocompoundsatanyratios，andtheluminescentintensityoftheseriesofsolidsolutionswasimprovedsignificantlyKeywords：VUv；phosphor；fluxmethod；do