半导体物理与器件第三版(尼曼)09章答案

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1、rdSemiconductorPhysicsandDevices:BasicPrinciples,3editionChapter9SolutionsManualProblemSolutionsChapter9ProblemSolutions9.29.1(a)φφχBO=−=−m514.01.(a)WehaveorFNIφBO=109.VCeeφ=VlnntHGKJ(b)Nd19FNIF2.810xICφ=Vln==()00259.ln0206.eVntHGKJ16NHG10KJd19(c)F2.810xI==()00259.ln0

2、265.Vφφχ=−=−4.284.01HG15KJBOm10orThenφBO=027.VV=−=−φφ1090265..biBOnandorV=−=−φφ0270206..VV=0825.biBOnbior(c)VV=0064.12/biL2∈VObiAlsoWx==d12/NMeNdQPL2∈VObi=12/x−14dNMeNQPL211788510()..bgx()0825.Od=MP−1915−1412/Nbg1610.xbg10QL211788510()..bgx()0064.O=M−1916PorNb1610.xgb

3、10gQWxc=10310.−4mor(d)−6xxc=9.110mdeNxddΕ=Thenmax∈eNxdd−−19154Ε=bg1610..xxbg10bg10310max∈=()−14−−1916611788510..bgxbg1610.xxbg10bg9.110=or()−1411788510..bgx4Ε=15910./xVcmmaxor4Ε=14110./xVcmmax9.3(d)(a)Goldonn-typeGaAsUsingthefigure,φ=055.Vχ=4.07Vandφ=51.VBnmSoφφχ=−=−5

4、14.07.BOmV=−=−φφ0550206..andbiBnnorφ=103.VBOVVbi=0344.(b)WethenfindFNIC−54φ=Vlnxx=2.1110cmandΕ=32610./xVcmntdmaxHGNKJd123rdSemiconductorPhysicsandDevices:BasicPrinciples,3editionChapter9SolutionsManualProblemSolutions17−−19164F4.710xIbg1610..xxbg510bg041010x=()00259.l

5、n=HG16KJ−14510x()13188510..bgxororφ=00580.V5nΕ=2.8310xVc/mmax(c)V=−=−φφ1030058..biBOn9.5orGold,n-typesiliconjunction.Fromthefigure,VVbi=0972.φ=081.VBn(d)15−3ForNxc=510m,wehaved12/L2∈+afVVObiRFNIx=Cdφ=VlnNMeNQPntdHGNKJd12/−1419L213188510()..bgx(09725.+)OF2.810xI=M−1916

6、P=()00259.lnHG15KJ=φn=0224.VNbg1610.xxbg510Q510xorThenxm=0416.µVV=−=0810224...0586dbi(e)(a)NoweNxΕ=dd12/maxLeN∈O∈dC′=−−19164NM2afVV+QPbg1610..xxbg510bg041610xbiR=12/()−14L−−191415O13188510..bgxbgbg1610..xx()11788510.bg510x=MPorMN205864().+PQ5Ε=2.8710xVc/mmaxor−92Cx′=9

7、.5010F/cm9.4−42ForAxc=510m,CCA=′φ=086.aVndφ=0058.V(Problem9.3)BnnSoThenCp=4.75FV=−=−φφ0860058..biBnn(b)or16−3ForNxc=510m,wefindVV=0802.dbi19andF2.810xIφ==()00259.ln0164.V12/nHG16KJL2∈+afVVO510xbiRx=dThenNMeNdQPVV=−=0810164...0646bi12/−14L213188510()..bgx(08025.+)ONow=

8、M−1916P−−19141612/Nb1610.xxgb510gQLbgbg1610..xx()11788510.bg510xOC′=MPor]N206464().+Qxm=0410.µdorAlso−82Cx′=2.9910F/cmeNxdda