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1、本科生畢業(yè)論文（設(shè)計(jì)）石墨烯PN結(jié)的電流理論特性研究TheoreticalstudyofelectronictransportpropertiesofgraphenePNjunctions姓名與學(xué)號(hào)3071102254指導(dǎo)教師年級(jí)與專業(yè)電子科學(xué)與技術(shù)07級(jí)所在學(xué)院信息與電子工程學(xué)系摘要在本文中，基于第一性原理計(jì)算，我們檢驗(yàn)了金屬接觸對(duì)于石墨烯的摻雜影響。之后，我們使用金屬接觸構(gòu)建了石墨烯PN結(jié)結(jié)構(gòu)。我們通過電流電壓特性曲線和透射率曲線研究了石墨烯PN結(jié)的電流傳輸性質(zhì)。盡管石墨烯PN結(jié)在導(dǎo)通正向電流和抑制反向電流這一特點(diǎn)上和傳統(tǒng)PN結(jié)有所相似，但仍然有很多新穎的現(xiàn)象存在于石墨烯P
2、N結(jié)中。我們還研究了使用六方氮化硼襯底時(shí)石墨烯PN結(jié)的電流傳輸情況。PN結(jié)在電子器件中非常重要，對(duì)于石墨烯PN結(jié)的研究將會(huì)促進(jìn)石墨烯電子這一后硅時(shí)代很有前景的領(lǐng)域的發(fā)展。關(guān)鍵詞：石墨烯PN結(jié)摻雜第一性原理氮化硼AbstractInthiswork,weexaminedtheeffectsofmetalcontactsonthedopingtypeofgraphenebasedonfirst-principlescalculation.ThenweusedthemetalcontactstechniquetoconstructseveralkindsofgraphenePNjun
3、ctions.WeexplorethecurrenttransportmechanismthroughthePNjunctionsbytheircurrent-voltagecharacteristicandtransmissionplots.GraphenePNjunctionsbehavedliketraditionalPNjunctionsbytransmittingpositivecurrentandsuppressingnegativecurrent,alsotherearesomenovelphenomenaingraphenePNjunctionsthatared
4、ifferentfromtraditionalPNjunctions.Wealsoinspectthesituationswhereh-BNsubstratewasused.PNjunctionsareveryimportinginelectronicandoptoelectronicdevices,andthestudyofgraphenePNjunctionswillputforwardthedevelopmentofgrapheneelectronics,averypromisingtechnologyinthepost-Siliconera.Keywords:graph
5、enePN-junctiondopingfirst-principlesBNContent1.Introduction12.Method23.Results83.1Dopinggraphenewithmetalcontacts83.2Cu
6、graphene–Au
7、graphenePNjunction103.3Cu
8、graphene–Pt
9、graphenePNjunction133.4Cu
10、graphene
11、BN–Au
12、graphene
13、BNPNjunction153.5Cu
14、graphene
15、BN–Pt
16、graphene
17、BNPNjunction173.6Cu-graphene
18、junction184.Conclusion195.Acknowledgement20References20Appendix22浙江大學(xué)本科生畢業(yè)論文石墨烯PN結(jié)的電流理論特性研究1.IntroductionGraphene,amonolayermaterialconsistsofcarbonatomstightlypackedintohoneycomblattices,hasbeenthefocusofmanyheatedresearchessinceitsfirstdiscoveryin2004byA.K.GeimandK.S.Novoselov[1].Asanovelm
19、aterial,graphenehasseveraloutstandingpropertiesthatmakeitpromisinginvariouskindsofapplications[2][3].Amongthem,theapplicationofgrapheneinmicro-/nano-electronicdeviceshasattractedmuchattention.Graphenehasmanygoodanduniqueelectricalpropertiesthatfitt
