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适用于低温和多种Ge分布的SiGeHBT电流增益模型 被引量:1

ACurrentGainModelofSiGeHBTforLow TemperatureandVariousGeFractionProfiles
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摘要 在前人优秀工作的基础上,叙述了一个适用于低温和多种基区Ge组分分布的SiGe-HBT电流增益的解析模型,详细推出了它的模型公式。该模型考虑了基区处于非平衡态下的载流子准弹道输运效应对集电极电流Jc和电流增益β的影响,并考虑了SiGe材料迁移率及本征载流子浓度随温度的变化。解析模型的计算结果与数值模拟结果符合较好,证明了解析模型是可信的和有一定精度的。模型计算结果表明:均匀Ge分布、较低的发射区掺杂浓度和较宽的基区有利于SiGeHBT在低温下具有较大的电流增益。 Onthebaseofmanyprepublishedexcellentworks,thispaperproposedananalyticalcurrentgainmodelofSiGeHBTforlowtemperatureandvariousGefractioncurves,anddeducedtheformulasofthismodeindetail.Thismodelconsideredtheinfluenceofquasiballistictransportofcarriersonthecollectorcurrentandcurrentgain,andincorporatedthevariationofSiGematerialmobilityandintrinsiccarrierdensityintermsoftemperature.Theresultsofanalyticalmodelarecomparedtosimulationandprovedtobeconvincedandaccurateingeneral.ThecomputedresultsofthismodelindicatethatitisbettertochooseuniformGefraction,loweremitterdopingandwiderbasetogetahighercurrentgainforSiGeHBTunderlowtemperature.
出处 《固体电子学研究与进展》 CAS CSCD 北大核心 1999年第2期190-198,共9页 Research & Progress of SSE
关键词 锗硅异质结 双极晶体管 电流增益 HBT LowTemperatureSiGeHBTCurrentGain
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参考文献1

  • 1Niu G F,Proc IEEE BCTM,1993年,93卷,201页

同被引文献10

  • 1金冬月,张万荣,吴春瑜.射频功率HBT自加热效应及补偿方法[J].微电子学,2006,36(3):288-291. 被引量:2
  • 2CRESSLER J D.SiGe HBT technology:a new con-tender for Si based RF and microwave circuit applica-tions[J].IEEE Trans Microwave Theo Tech,1998,46(5):572-589.
  • 3MIURA M,SHIMAMOTO H,ODA K,et al.Ultra-low-power SiGe HBT technology for wide-range mi-crowave applications[C]//IEEE Bipolar/BiCMOSCirc Technol Meet.Monterey,CA,USA.2008:129-132.
  • 4ZHANG W R,YANG J W,LIU H J,et al.The tem-perature dependence of DC characteristics and its im-plication in microwave power Si/SiGe/Si HBT's[C]//Int Conf Microwave Milli-wave Technol.Beijing,China.2004:594-598.
  • 5RINALDI N.Small-signal operation of semiconductordevices including self-heating with application to ther-mal characterization and instability analysis[J].IEEETrans Elec Dev,2001,48(2):323-331.
  • 6LI H,MA Z Q,MA P X,et al.Thermal resistance ofSiGe HBTs at high power densities[J].Semicond SciTechnol,2007,22(1):1-2.
  • 7JAIN S C,DECOUTERE S,WILLANDER M,et al.SiGe HBTs for application in BiCMOS technology I:Stability,reliability and material parameters[J].Semicond Sci Technol,2001,16(6):R51-R65.
  • 8JAIN S C,DECOUTERE S,WILLANDER M,et al.SiGe HBTs for application in BiCMOS technologyⅡ:Design,technology and performance[J].SemicondSci Technol,2001,16(7):R67-R85.
  • 9胡宁,张万荣,谢红云,金冬月,陈亮,沈珮,黄璐,黄毅文,王扬.新型发射极指组合结构功率SiGe HBT热分析[J].微电子学,2010,40(2):305-308. 被引量:5
  • 10肖盈,张万荣,金冬月,陈亮,王任卿,谢红云.能带工程对射频功率SiGe异质结双极晶体管热性能的改善[J].物理学报,2011,60(4):310-315. 被引量:5

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