微波加熱合成ZnO晶須的研究.pdf

1、武漢理工大學碩士學位論文微波加熱合成ZnO晶須的研究姓名：王智東申請學位級別：碩士專業(yè)：材料加工工程指導教師：周建20050501武漢理工大學碩士學位論文AbstractZnicoxide(ZnO)isadirectwidegapcompoundsemiconductorwiththe337eVbandgapandthe60meVbindingenergyofthefreeexciton，whichpermitsexcitonicemi

2、ssionatroomtemPeratureandaboveBecauseitcouldberealizedthevisiblelight，UV—fluorescenceandlaserbeam，ZnOisanew—stylematerialtopreparetheshortwaveLEDandlaserRecently，thepreparationandapplicationofZnOmicrocosmicmorphologyisan

3、importantresearchofphotoelectricmaterialInthispaper，theproperties，characteristics，preparationandresearchpresentsituationofZnOlowdimensionalmaterialshavebeenfullysummarized，especiallytheapplicationanddevelopmentofZnOwhisk

4、ersTheresearchprovesthatthemicrowaveheatingmethodissuitabletocontrolthematerialmorphologyThedifferentmorphologiesofZnOwhiskershadbeensynthesizedbymicrowavesolidphraseheatingmethod，such淞multineedles，one—dimensionalhexagon

5、alprismsandbexagonalmicrotubesThetechniquesofdiversemorphologiesZnOwhiskershavebeendeservedthroughplentyofexperimentsandscientificanalysesconsideringtheaSpectofthecomponentofrawmaterials，temperatureandheatingtimeThemulti

6、needleZnOwhiskersbadbeensynthesized誦tllthecontrolofvaporphrasepressureunder1030“Cand15minsyntheticaltime；theonedimensionalhexagonalprismshadbeensynthesizedwithllanoandmicrometermixedpowderunder12006Cand30minsyntheticalti

7、me；thehexagonalmicrotubeshadbeensynthesizedunder1350℃and30ⅡlinAccordingtothecharacteristicsofmicrowaveelectricheatingandthegrowingpropertiesofZnOpolarcrystal，themseerchonthegrowingprocessofZnOwhiskerswitlldifferentmorpho

8、logieshasbeendoneprimarilyItindicatesthatgrowthmechanismisVS，whichmeanstheZnOpowdervaporizedintheregionofhightemperaturethatWasfilledwithZnO(曲，Zn(酚and02(曲Intheregionoflowtemperature，theZn(g)and02generatedchemicalreaction

9、anddecomposedatthevaporsolidinterface，thedifferentmorphologieshadbeensynthesizedunderdifferentconditions，such嬲needlesandprismsWhenthetemperatureWaSlxighenoughthecentralizedlocationofoxygenvacancieswaSasthesourceofevapora