From b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b Mon Sep 17 00:00:00 2001 From: priyanka Date: Wed, 24 Jun 2015 15:03:17 +0530 Subject: initial commit / add all books --- 3440/CH7/EX7.3/Ex7_3.sce | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) create mode 100644 3440/CH7/EX7.3/Ex7_3.sce (limited to '3440/CH7/EX7.3') diff --git a/3440/CH7/EX7.3/Ex7_3.sce b/3440/CH7/EX7.3/Ex7_3.sce new file mode 100644 index 000000000..0552bcddd --- /dev/null +++ b/3440/CH7/EX7.3/Ex7_3.sce @@ -0,0 +1,23 @@ +clc + +T=300 //K +k=8.617*10^-5 //eV/K +q=1.6*10**-19 //C +epsilons=8.854*10^-31 //F/cm +ni=9.65*10^9//cm^-3 +ND=5*10^19//cm^-3 +phibn=0.8//V +I=1//A +mn=0.26 +Rc=10^-6//ohm cm^2 +A=10^-5//cm^2 +h=1.05*10^-34 +a=Rc/A +disp(a,"Rc/A in ohm is=") +C2=(4*sqrt(mn*epsilons*(1.05*10^-10)))/h +disp(C2,"C2 in m^(3/2)/V is= ") //texbook ans is wrong +I0=(A/Rc)*(sqrt(ND*10^6)/C2)*exp((C2*phibn)/sqrt(ND*10^6)) +disp(I0,"I0 in A is= ") //textbook ans is wrong +V=phibn-(sqrt(ND)/C2)*log(I0/I) +disp(V,"V in V is= ") + -- cgit