Ohmic zinc oxide ceramics.pdf

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1、ConductionmechanismofnonOhmiczincoxideceramicsKazuoEdaCitation:J.Appl.Phys.49,2964(1978);doi:10.1063/1.325139Viewonline:http://dx.doi.org/10.1063/1.325139ViewTableofContents:http://jap.aip.org/resource/1/JAPIAU/v49/i5PublishedbytheAmericanInstituteofPhysics.RelatedArticles

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4、rmationonJ.Appl.Phys.JournalHomepage:http://jap.aip.org/JournalInformation:http://jap.aip.org/about/about_the_journalTopdownloads:http://jap.aip.org/features/most_downloadedInformationforAuthors:http://jap.aip.org/authorsDownloaded21Feb2012to202.38.222.61.Redistributionsub

5、jecttoAIPlicenseorcopyright;seehttp://jap.aip.org/about/rights_and_permissionsConductionmechanismofnon-OhmiczincoxideceramicsKazuoEdaWirelessResearchLaboratory.MatsushitaElectricIndustrialCo.•Ltd.Kadoma.Osaka.571.Japan(Received25April1977;acceptedforpublication18November19

6、77)Theconductionmechanismofnon-OhmicZnOceramicsisinvestigated.Inordertoexplainthenon•Ohmicproperty,anewenergy-bandmodelcomposedofathinintergranularlayerwithtrapssandwichedbetweenSchottkybarriersformedoppositeeachotherisproposed.Accordingtothenewlyproposedenergy-bandmodel,t

7、henon-OhmicpropertyofZnOceramicsismainlygovernedbyfieldemissionforthereverse-biasedSchottkybarrierinthevoltageregionabovethethresholdvoltageintr.eV-Icurveandbythermionicemissioninthevoltageregionbelowthethresholdvoltage.Theenergy-bandmodelandtheconductionmechanismdiscussed

8、inthispaperareappropriatefortheexplanationofexperimentalresults,notonlythosepresentedinpr