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 --- 2198/CH1/EX1.10.1/Ex1_10_1.sce | 17 +++++++++++++++++ 2198/CH1/EX1.11.1/Ex1_11_1.sce | 13 +++++++++++++ 2198/CH1/EX1.11.10/Ex1_11_10.sce | 12 ++++++++++++ 2198/CH1/EX1.11.11/Ex1_11_11.sce | 14 ++++++++++++++ 2198/CH1/EX1.11.2/Ex1_11_2.sce | 11 +++++++++++ 2198/CH1/EX1.11.3/Ex1_11_3.sce | 19 +++++++++++++++++++ 2198/CH1/EX1.11.4/Ex1_11_4.sce | 19 +++++++++++++++++++ 2198/CH1/EX1.11.5/Ex1_11_5.sce | 16 ++++++++++++++++ 2198/CH1/EX1.11.6/Ex1_11_6.sce | 18 ++++++++++++++++++ 2198/CH1/EX1.11.7/Ex1_11_7.sce | 19 +++++++++++++++++++ 2198/CH1/EX1.11.8/Ex1_11_8.sce | 19 +++++++++++++++++++ 2198/CH1/EX1.11.9/Ex1_11_9.sce | 13 +++++++++++++ 2198/CH1/EX1.12.1/Ex1_12_1.sce | 12 ++++++++++++ 2198/CH1/EX1.12.2/Ex1_12_2.sce | 12 ++++++++++++ 2198/CH1/EX1.13.1/Ex1_13_1.sce | 24 ++++++++++++++++++++++++ 2198/CH1/EX1.13.2/Ex1_13_2.sce | 23 +++++++++++++++++++++++ 2198/CH1/EX1.13.3/Ex1_13_3.sce | 23 +++++++++++++++++++++++ 2198/CH1/EX1.13.4/Ex1_13_4.sce | 11 +++++++++++ 2198/CH1/EX1.15.1/Ex1_15_1.sce | 15 +++++++++++++++ 2198/CH1/EX1.15.2/Ex1_15_2.sce | 15 +++++++++++++++ 2198/CH1/EX1.16.1/Ex1_16_1.sce | 17 +++++++++++++++++ 2198/CH1/EX1.16.2/Ex1_16_2.sce | 13 +++++++++++++ 2198/CH1/EX1.16.3/Ex1_16_3.sce | 9 +++++++++ 2198/CH1/EX1.16.4/Ex1_16_4.sce | 28 ++++++++++++++++++++++++++++ 2198/CH1/EX1.16.5/Ex1_16_5.sce | 19 +++++++++++++++++++ 2198/CH1/EX1.16.6/Ex1_16_6.sce | 15 +++++++++++++++ 2198/CH1/EX1.16.7/Ex1_16_7.sce | 23 +++++++++++++++++++++++ 2198/CH1/EX1.16.8/Ex1_16_8.sce | 20 ++++++++++++++++++++ 2198/CH1/EX1.40.1/Ex1_40_1.sce | 10 ++++++++++ 2198/CH1/EX1.40.10/Ex1_40_10.sce | 12 ++++++++++++ 2198/CH1/EX1.40.11/Ex1_40_11.sce | 10 ++++++++++ 2198/CH1/EX1.40.12/Ex1_40_12.sce | 9 +++++++++ 2198/CH1/EX1.40.13/Ex1_40_13.sce | 9 +++++++++ 2198/CH1/EX1.40.14/Ex1_40_14.sce | 9 +++++++++ 2198/CH1/EX1.40.15/Ex1_40_15.sce | 30 ++++++++++++++++++++++++++++++ 2198/CH1/EX1.40.16/Ex1_40_16.sce | 11 +++++++++++ 2198/CH1/EX1.40.17/Ex1_40_17.sce | 16 ++++++++++++++++ 2198/CH1/EX1.40.18/Ex1_40_18.sce | 14 ++++++++++++++ 2198/CH1/EX1.40.19/Ex1_40_19.sce | 10 ++++++++++ 2198/CH1/EX1.40.20/Ex1_40_20.sce | 9 +++++++++ 2198/CH1/EX1.40.21/Ex1_40_21.sce | 16 ++++++++++++++++ 2198/CH1/EX1.40.22/Ex1_40_22.sce | 10 ++++++++++ 2198/CH1/EX1.40.23/Ex1_40_23.sce | 19 +++++++++++++++++++ 2198/CH1/EX1.40.24/Ex1_40_24.sce | 28 ++++++++++++++++++++++++++++ 2198/CH1/EX1.40.25/Ex1_40_25.sce | 28 ++++++++++++++++++++++++++++ 2198/CH1/EX1.40.3/Ex1_40_3.sce | 12 ++++++++++++ 2198/CH1/EX1.40.4/Ex1_40_4.sce | 14 ++++++++++++++ 2198/CH1/EX1.40.5/Ex1_40_5.sce | 15 +++++++++++++++ 2198/CH1/EX1.40.6/Ex1_40_6.sce | 13 +++++++++++++ 2198/CH1/EX1.40.7/Ex1_40_7.sce | 15 +++++++++++++++ 2198/CH1/EX1.40.8/Ex1_40_8.sce | 20 ++++++++++++++++++++ 2198/CH1/EX1.40.9/Ex1_40_9.sce | 11 +++++++++++ 2198/CH1/EX1.5.1/Ex1_5_1.sce | 19 +++++++++++++++++++ 2198/CH1/EX1.9.1/Ex1_9_1.sce | 17 +++++++++++++++++ 2198/CH1/EX1.9.2/Ex1_9_2.sce | 11 +++++++++++ 55 files changed, 866 insertions(+) create mode 100755 2198/CH1/EX1.10.1/Ex1_10_1.sce create mode 100755 2198/CH1/EX1.11.1/Ex1_11_1.sce create mode 100755 2198/CH1/EX1.11.10/Ex1_11_10.sce create mode 100755 2198/CH1/EX1.11.11/Ex1_11_11.sce create mode 100755 2198/CH1/EX1.11.2/Ex1_11_2.sce create mode 100755 2198/CH1/EX1.11.3/Ex1_11_3.sce create mode 100755 2198/CH1/EX1.11.4/Ex1_11_4.sce create mode 100755 2198/CH1/EX1.11.5/Ex1_11_5.sce create mode 100755 2198/CH1/EX1.11.6/Ex1_11_6.sce create mode 100755 2198/CH1/EX1.11.7/Ex1_11_7.sce create mode 100755 2198/CH1/EX1.11.8/Ex1_11_8.sce create mode 100755 2198/CH1/EX1.11.9/Ex1_11_9.sce create mode 100755 2198/CH1/EX1.12.1/Ex1_12_1.sce create mode 100755 2198/CH1/EX1.12.2/Ex1_12_2.sce create mode 100755 2198/CH1/EX1.13.1/Ex1_13_1.sce create mode 100755 2198/CH1/EX1.13.2/Ex1_13_2.sce create mode 100755 2198/CH1/EX1.13.3/Ex1_13_3.sce create mode 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a/2198/CH1/EX1.10.1/Ex1_10_1.sce b/2198/CH1/EX1.10.1/Ex1_10_1.sce new file mode 100755 index 000000000..43c1e60c1 --- /dev/null +++ b/2198/CH1/EX1.10.1/Ex1_10_1.sce @@ -0,0 +1,17 @@ +//Ex 1.10.1 +clc;clear;close; +format('v',9); + +//Given : +l=4*10^-2;//m +A=10*10^-6;//m^2 +V=1;//Volt +I=5*10^-3;//A +q=1.6*10^-19;//Coulomb +mu=1300;//cm^2/V-s +J=I/A;//A/m^2 +E=V/l;//V/m +n=J/(q*mu*10^-4*E); +v=mu*10^-4*E;//m/s +disp(n,"Concentration of electron(per m^3) : "); +disp(v,"Electron velocity(m/s) : "); diff --git a/2198/CH1/EX1.11.1/Ex1_11_1.sce b/2198/CH1/EX1.11.1/Ex1_11_1.sce new file mode 100755 index 000000000..27ff0af4e --- /dev/null +++ b/2198/CH1/EX1.11.1/Ex1_11_1.sce @@ -0,0 +1,13 @@ +//Ex 1.11.1 +clc;clear;close; +format('v',9); + +//Given : +ni=1.5*10^10/10^-6;//per m^3 +mu_n=1800*10^-4;//m^2/V-s +mu_p=500*10^-4;//m^2/V-s +q=1.6*10^-19;//Coulomb +sigma_i=ni*(mu_n+mu_p)*q;//(ohm-m)^-1 +disp(sigma_i,"Conductivity in (ohm-m)^-1 : "); +rho_i=1/sigma_i;//ohm-m +disp(rho_i,"Resistivity in ohm-m : "); diff --git a/2198/CH1/EX1.11.10/Ex1_11_10.sce b/2198/CH1/EX1.11.10/Ex1_11_10.sce new file mode 100755 index 000000000..6cc00a179 --- /dev/null +++ b/2198/CH1/EX1.11.10/Ex1_11_10.sce @@ -0,0 +1,12 @@ +//Ex 1.11.10 +clc;clear;close; +format('v',9); + +//Given : +ni=2.5*10^13;//per cm^3 +mu_p=1800;//cm^2/V-s +mu_n=3800;//cm^2/V-s +q=1.6*10^-19;//Coulomb +sigma_i=ni*q*(mu_n+mu_p);//(ohm-cm)^-1 +rho_i=1/sigma_i;//ohm-cm +disp(round(rho_i),"Resistivity of Ge(ohm-cm) : "); diff --git a/2198/CH1/EX1.11.11/Ex1_11_11.sce b/2198/CH1/EX1.11.11/Ex1_11_11.sce new file mode 100755 index 000000000..7b6aa76f8 --- /dev/null +++ b/2198/CH1/EX1.11.11/Ex1_11_11.sce @@ -0,0 +1,14 @@ +//Ex 1.11.11 +clc;clear;close; +format('v',9); + +//Given : +ni=1.2*10^16;//per m^3 +p=10^22;//per m^3 +mu_p=500*10^-4;//cm^2/V-s +mu_n=1350*10^-4;//cm^2/V-s +q=1.6*10^-19;//Coulomb +n=ni^2/p;//per m^3 +disp(n,"Electron concentration per m^3 : "); +sigma=q*(n*mu_n+p*mu_p);//(ohm-m)^-1 +disp(sigma,"Conductivity of Si(ohm-m)^-1 : "); diff --git a/2198/CH1/EX1.11.2/Ex1_11_2.sce b/2198/CH1/EX1.11.2/Ex1_11_2.sce new file mode 100755 index 000000000..94c688621 --- /dev/null +++ b/2198/CH1/EX1.11.2/Ex1_11_2.sce @@ -0,0 +1,11 @@ +//Ex 1.11.2 +clc;clear;close; +format('v',9); + +//Given : +T=300;//K +Ao=2.735*10^31;//constant for Si +k=86*10^-6;//boltzman constant +EGO=1.1;//volt(Bandgap energy) +ni=sqrt(Ao*T^3*exp(-EGO/k/T));//per cm^3 +disp(ni,"Intrinsic carrier concentration per cm^3 : "); diff --git a/2198/CH1/EX1.11.3/Ex1_11_3.sce b/2198/CH1/EX1.11.3/Ex1_11_3.sce new file mode 100755 index 000000000..bf98455bb --- /dev/null +++ b/2198/CH1/EX1.11.3/Ex1_11_3.sce @@ -0,0 +1,19 @@ +//Ex 1.11.3 +clc;clear;close; +format('v',9); + +//Given : +A=1*10^-6;//m^2 +R=3.6*10^-4/10^-2;//ohm/m +n=9*10^26;//electrons/m^3 +J=3*10^6;//A/m^2 +q=1.6*10^-19;//Coulomb +I=J*A;//A +disp(I,"(i) Current in A : "); +rho=R*A;//ohm-m +sigma=1/rho;//(ohm-m)^-1 +disp(sigma,"(ii) Conductivity in (ohm-m)^-1"); +v=J/n/q;//m/s +disp(v,"(iii) velocity of free electrons in m/s : "); +mu=sigma/n/q;//m^2/V-s +disp(mu,"(iv) Mobility in m^2/V-s ; "); diff --git a/2198/CH1/EX1.11.4/Ex1_11_4.sce b/2198/CH1/EX1.11.4/Ex1_11_4.sce new file mode 100755 index 000000000..06aee80cb --- /dev/null +++ b/2198/CH1/EX1.11.4/Ex1_11_4.sce @@ -0,0 +1,19 @@ +//Ex 1.11.4 +clc;clear;close; +format('v',9); + +//Given : +rho=3*10^5*10^-2;//ohm-m +T1=30+273;//K +mu_n=0.13;//m^2/V-s +mu_p=0.05;//m^2/V-s +q=1.6*10^-19;//Coulomb +T2=100+273;//K +sigma_i=1/rho;//(ohm-m)^-1 +ni1=sigma_i/q/(mu_n+mu_p);//electrons/m^3 +disp(ni1,"Intrinsic concentration at 30 degree C(per m^3) : "); +k=8.62*10^-5;//eV/K(Boltzman constant) +EGO=1.21;//V(Energy band gap) +Ao=ni1^2/(T1^3*exp(-EGO/k/T1));//constant +ni2=sqrt(Ao*T2^3*exp(-EGO/k/T2));//per cm^3 +disp(ni2,"Intrinsic concentration at 100 degree C(per m^3) : "); diff --git a/2198/CH1/EX1.11.5/Ex1_11_5.sce b/2198/CH1/EX1.11.5/Ex1_11_5.sce new file mode 100755 index 000000000..d547687eb --- /dev/null +++ b/2198/CH1/EX1.11.5/Ex1_11_5.sce @@ -0,0 +1,16 @@ +//Ex 1.11.5 +clc;clear;close; +format('v',9); + +//Given : +l=0.1*10^-2;//m +R=1.5*10^3;//ohm +mu_n=0.14;//m^2/V-s +mu_p=0.05;//m^2/V-s +A=8*10^-8;//m^2 +ni=1.5*10^10*10^6;// per m^3 +q=1.6*10^-19;//Coulomb +rho_n=R*A/l;//ohm-m +sigma_n=1/rho_n;//(ohm-m)^-1 +ND=sigma_n/mu_n/q;// +disp(ND,"Majority Carrier density(per m^3) : "); diff --git a/2198/CH1/EX1.11.6/Ex1_11_6.sce b/2198/CH1/EX1.11.6/Ex1_11_6.sce new file mode 100755 index 000000000..4b8550f77 --- /dev/null +++ b/2198/CH1/EX1.11.6/Ex1_11_6.sce @@ -0,0 +1,18 @@ +//Ex 1.11.6 +clc;clear;close; +format('v',9); + +//Given : +A=2.5*10^-4;//m^2 +n=1.5*10^16;//per m^3 +q=1.6*10^-19;//Coulomb +mu_n=0.14;//m^2/V-s +mu_p=0.05;//m^2/V-s +I=1.2*10^-3;//A +V=9;//Volts +ni=n;// per m^3 +sigma_i=ni*q*(mu_n+mu_p);//(ohm-m)^-1 +rho_i=1/sigma_i;//ohm-m +R=V/I;//ohm +l=R*A/rho_i;//m +disp(l*1000,"Length of the bar(mm) : "); diff --git a/2198/CH1/EX1.11.7/Ex1_11_7.sce b/2198/CH1/EX1.11.7/Ex1_11_7.sce new file mode 100755 index 000000000..a47e34e58 --- /dev/null +++ b/2198/CH1/EX1.11.7/Ex1_11_7.sce @@ -0,0 +1,19 @@ +//Ex 1.11.7 +clc;clear;close; +format('v',8); + +//Given : +n=5*10^22;//per cm^3 +mu_n=1300;//cm^2/V-s +mu_p=500;//cm^2/V-s +ni=1.5*10^10;//per cm^3 +T=300;//K +rho_n=9.5;//ohm-cm +q=1.6*10^-19;//Coulomb +sigma_i=ni*q*(mu_n+mu_p);//(ohm-cm)^-1 +rho_i=1/sigma_i;//ohm-cm +disp(rho_i,"Resistivity in ohm-cm : "); +sigma_n=1/rho_n;//(ohm-cm)^-1 +ND=sigma_n/mu_n/q;//per m^3 +Ratio=ND/n; +disp(Ratio,"Ratio of donor impurity atom to Si atom : "); diff --git a/2198/CH1/EX1.11.8/Ex1_11_8.sce b/2198/CH1/EX1.11.8/Ex1_11_8.sce new file mode 100755 index 000000000..cbd6b58f7 --- /dev/null +++ b/2198/CH1/EX1.11.8/Ex1_11_8.sce @@ -0,0 +1,19 @@ +//Ex 1.11.8 +clc;clear;close; +format('v',9); + +//Given : +n=5*10^22;//per cm^3 +ni=1.52*10^10*10^6;//per m^3 +q=1.6*10^-19;//Coulomb +mu_n=0.135;//m^2/V-s +mu_p=0.048;//m^2/V-s +impurity=1/10^8;//atoms +sigma_i=ni*q*(mu_n+mu_p);//(ohm-cm)^-1 +rho_i=1/sigma_i;//ohm-cm +disp(rho_i,"Resistivity of intrinsic Si in ohm-m : "); +ND=n*impurity*10^6;//per m^3 +sigma_n=ND*mu_n*q;//(ohm-m)^-1 +rho_n=1/sigma_n;//ohm-m +disp(rho_n,"Resistivity of doped Si in ohm-m : "); +//Answer in the book is not accurate. diff --git a/2198/CH1/EX1.11.9/Ex1_11_9.sce b/2198/CH1/EX1.11.9/Ex1_11_9.sce new file mode 100755 index 000000000..c26d9a5e6 --- /dev/null +++ b/2198/CH1/EX1.11.9/Ex1_11_9.sce @@ -0,0 +1,13 @@ +//Ex 1.11.9 +clc;clear;close; +format('v',7); + +//Given : +rho=9.6*10^-2;//ohm-m +mu_n=1300*10^-4;//m^2/V-s +sigma_n=1/rho;//(ohm-cm)^-1 +TotalAtoms=5*10^28;//per m^3 +q=1.6*10^-19;//Coulomb +ND=sigma_n/mu_n/q;//per m^3 +ratio=ND/TotalAtoms; +disp(ratio,"Ratio of doner atom to Si atom per unit volume : "); diff --git a/2198/CH1/EX1.12.1/Ex1_12_1.sce b/2198/CH1/EX1.12.1/Ex1_12_1.sce new file mode 100755 index 000000000..8a01938e8 --- /dev/null +++ b/2198/CH1/EX1.12.1/Ex1_12_1.sce @@ -0,0 +1,12 @@ +//Ex 1.12.1 +clc;clear;close; +format('v',9); + +//Given : +T=27+273;//K +ND=10^17;//per cm^3 +ni=1.5*10^10;//per cm^3 +n=ND;//per m^3//ND>>n +disp(n,"Electron concentration per cm^3 : "); +p=ni^2/n;//per m^3 +disp(p,"Holes per cm^3 : "); diff --git a/2198/CH1/EX1.12.2/Ex1_12_2.sce b/2198/CH1/EX1.12.2/Ex1_12_2.sce new file mode 100755 index 000000000..81f8fb397 --- /dev/null +++ b/2198/CH1/EX1.12.2/Ex1_12_2.sce @@ -0,0 +1,12 @@ +//Ex 1.12.2 +clc;clear;close; +format('v',9); + +//Given : +Vol=4*50*1.5;//mm^3 +ni=2.4*10^19;//per m^3 +p=7.85*10^14;//per m^3 +n=ni^2/p;//per m^3 +Vol=Vol*10^-9;//m^3 +TotalElectron=n*Vol;//no. of electrons +disp(TotalElectron,"Total free electrons per m^3 : "); diff --git a/2198/CH1/EX1.13.1/Ex1_13_1.sce b/2198/CH1/EX1.13.1/Ex1_13_1.sce new file mode 100755 index 000000000..6f3d7cf5c --- /dev/null +++ b/2198/CH1/EX1.13.1/Ex1_13_1.sce @@ -0,0 +1,24 @@ +//Ex 1.13.1 +clc;clear;close; +format('v',9); + +//Given : +ND=10^14;//per cm^3 +NA=7*10^13;//per cm^3 +rho_i=60;//ohm-cm +E=2;//V/cm +q=1.6*10^-19;//Coulomb +mu_p=1800;//cm^2/V-s +mu_n=3800;//cm^2/V-s +sigma_i=1/rho_i;//(ohm-cm)^-1 +ni=sigma_i/q/(mu_n+mu_p);//per cm^3 +//n=p+(ND-NA);//per cm^3 +//n*p=ni^2 implies (p+(ND-NA))*p=ni^2 +//p^2+(ND-NA)*p-ni^2=0 +m=[1 (ND-NA) -ni^2];//polynomial +p=roots(m);//per m^3 +p=p(2);//taking only +ve value +n=ni^2/p;//per m^3 +J=(n*mu_n+p*mu_p)*q*E/10^-4;//A/m^2 +disp(J,"Total current density(A/m^2) : "); +//Answer in the textbook is not accurate. diff --git a/2198/CH1/EX1.13.2/Ex1_13_2.sce b/2198/CH1/EX1.13.2/Ex1_13_2.sce new file mode 100755 index 000000000..51329eb64 --- /dev/null +++ b/2198/CH1/EX1.13.2/Ex1_13_2.sce @@ -0,0 +1,23 @@ +//Ex 1.13.2 +clc;clear;close; +format('v',9); + +//Given : +ND=10^14;//per cm^3 +NA=7*10^3;//per cm^3 +rho_i=60;//ohm-cm +J=52;//mA/cm^2 +q=1.6*10^-19;//Coulomb +mu_p=1800;//cm^2/V-s +mu_n=3800;//cm^2/V-s +sigma_i=1/rho_i;//(ohm-cm)^-1 +ni=sigma_i/q/(mu_n+mu_p);//per cm^3 +//n=p+(ND-NA);//per cm^3 +//n*p=ni^2 implies (p+(ND-NA))*p=ni^2 +//p^2+(ND-NA)*p-ni^2=0 +m=[1 (ND-NA) -ni^2];//polynomial +p=roots(m);//per m^3 +p=p(2);//taking only +ve value +n=ni^2/p;//per m^3 +E=J*10^-3/q/(n*mu_n+p*mu_p);//V/m +disp(E,"Value of electrical field,E(V/cm) : "); diff --git a/2198/CH1/EX1.13.3/Ex1_13_3.sce b/2198/CH1/EX1.13.3/Ex1_13_3.sce new file mode 100755 index 000000000..72ec4a0ef --- /dev/null +++ b/2198/CH1/EX1.13.3/Ex1_13_3.sce @@ -0,0 +1,23 @@ +//Ex 1.13.3 +clc;clear;close; +format('v',9); + +//Given : +ND=10^14;//per cm^3 +NA=7*10^13;//per cm^3 +rho_i=60;//ohm-cm +E=2;//V/cm +q=1.6*10^-19;//Coulomb +mu_p=500;//cm^2/V-s +mu_n=1300;//cm^2/V-s +sigma_i=1/rho_i;//(ohm-cm)^-1 +ni=sigma_i/q/(mu_n+mu_p);//per cm^3 +//n=p+(ND-NA);//per cm^3 +//n*p=ni^2 implies (p+(ND-NA))*p=ni^2 +//p^2+(ND-NA)*p-ni^2=0 +m=[1 (ND-NA) -ni^2];//polynomial +p=roots(m);//per m^3 +p=p(2);//taking only +ve value +n=ni^2/p;//per m^3 +J=(n*mu_n+p*mu_p)*q*E/10^-4;//A/m^2 +disp(J,"Total current density(A/m^2) : "); diff --git a/2198/CH1/EX1.13.4/Ex1_13_4.sce b/2198/CH1/EX1.13.4/Ex1_13_4.sce new file mode 100755 index 000000000..a5ff522e7 --- /dev/null +++ b/2198/CH1/EX1.13.4/Ex1_13_4.sce @@ -0,0 +1,11 @@ +//Ex 1.13.4 +clc;clear;close; +format('v',9); + +//Given : +l=6*10^-2;//m +V=12;//volts +v=73;//m/s +E=V/l;//V/m +mu=v/E;//m^2/V-s +disp(mu,"Electron mobilitym^2/V-s) : "); diff --git a/2198/CH1/EX1.15.1/Ex1_15_1.sce b/2198/CH1/EX1.15.1/Ex1_15_1.sce new file mode 100755 index 000000000..86eb7b415 --- /dev/null +++ b/2198/CH1/EX1.15.1/Ex1_15_1.sce @@ -0,0 +1,15 @@ +//Ex 1.15.1 +clc;clear;close; +format('v',9); + +//Given : +ND=10^13;//per cm^3 +Bz=0.2;//Wb/m^2 +d=5;//mm +E=5;//V/cm +q=1.6*10^-19;//Coulomb +mu_n=1300;//cm^2/V-s +rho=ND*q;//Coulomb/cm^3 +J=rho*mu_n*E;//A/cm^2 +VH=Bz*10^-4*J*d*10^-1/rho;//V +disp(VH*10^3,"Magnitude of hall voltage(mV) : "); diff --git a/2198/CH1/EX1.15.2/Ex1_15_2.sce b/2198/CH1/EX1.15.2/Ex1_15_2.sce new file mode 100755 index 000000000..0edf63199 --- /dev/null +++ b/2198/CH1/EX1.15.2/Ex1_15_2.sce @@ -0,0 +1,15 @@ +//Ex 1.15.2 +clc;clear;close; +format('v',9); + +//Given : +rho=220*10^3*10^-2;//ohm/m +d=2.2*10^-3;//m +w=2*10^-3;//m +B=0.1;//Wb/m^2 +I=5*10^-6;//A +VH=28*10^-3;//V +sigma=1/rho;//(ohm-m)^-1 +RH=VH*w/(B*I);//ohm +mu=sigma*RH;//m^2/V-s +disp(mu,"Mobility(m^2/V-s) : "); diff --git a/2198/CH1/EX1.16.1/Ex1_16_1.sce b/2198/CH1/EX1.16.1/Ex1_16_1.sce new file mode 100755 index 000000000..666b7c362 --- /dev/null +++ b/2198/CH1/EX1.16.1/Ex1_16_1.sce @@ -0,0 +1,17 @@ +//Ex 1.16.1 +clc;clear;close; +format('v',9); + +//Given : +l=4*10^-2;//m +A=10*10^-6;//m^2 +V=1;//Volt +I=5*10^-3;//A +q=1.6*10^-19;//Coulomb +mu=1300;//cm^2/V-s +J=I/A;//A/m^2 +E=V/l;//V/m +n=J/(q*mu*10^-4*E) +v=mu*10^-4*E;//m/s +disp(n,"Concentration of electron(per m^3) : "); +disp(v,"Electron velocity(m/s) : "); diff --git a/2198/CH1/EX1.16.2/Ex1_16_2.sce b/2198/CH1/EX1.16.2/Ex1_16_2.sce new file mode 100755 index 000000000..df2c52457 --- /dev/null +++ b/2198/CH1/EX1.16.2/Ex1_16_2.sce @@ -0,0 +1,13 @@ +//Ex 1.16.2 +clc;clear;close; +format('v',9); + +//Given : +mu_n=3800;//cm^2/V-s +mu_p=1300;//cm^2/V-s +ni=2.5*10^13;//per cm^3 +q=1.6*10^-19;//Coulomb +ND=4.4*10^22/10^8;//per cm^3 +sigma_n=ND*q*mu_n;//(ohm-m)^-1 +rho_n=1/sigma_n;//ohm-cm +disp(rho_n,"Resistivity of doped Ge(ohm-cm) : "); diff --git a/2198/CH1/EX1.16.3/Ex1_16_3.sce b/2198/CH1/EX1.16.3/Ex1_16_3.sce new file mode 100755 index 000000000..c54176f0a --- /dev/null +++ b/2198/CH1/EX1.16.3/Ex1_16_3.sce @@ -0,0 +1,9 @@ +//Ex 1.16.3 +clc;clear;close; +format('v',9); + +//Given : +ni=1.5*10^16;//per m^3 +n=5*10^20;//per m^3 +p=ni^2/n;//per m^3 +disp(p,"Minor carrier density(per m^3) : "); diff --git a/2198/CH1/EX1.16.4/Ex1_16_4.sce b/2198/CH1/EX1.16.4/Ex1_16_4.sce new file mode 100755 index 000000000..96d24ccba --- /dev/null +++ b/2198/CH1/EX1.16.4/Ex1_16_4.sce @@ -0,0 +1,28 @@ +//Ex 1.16.4 +clc;clear;close; +format('v',9); + +//Given : +ni=1.5*10^10;//per cm^3 +mu_n=1400;//cm^2/V-s +mu_p=500;//cm^2/V-s +l=1;//cm +a=1;//mm^2 +q=1.6*10^-19;//Coulomb +del_n=10^14;//per cm^3 +del_p=10^14;//per cm^3 +Nd=8*10^15;//per cm^3 +n=Nd;//per cm^3(Nd>>ni) +disp(n,"Electron concentration, n(per cm^3) : "); +p=ni^2/n;//per m^3 +disp(p,"Hole concentration, p(per cm^3) : "); +nT=Nd+del_n;//per cm^3 +disp(nT,"Total electron concentration, nT(per cm^3) : "); +pT=p+del_p;//per cm^3 +disp(pT,"Total hole concentration, pT(per cm^3) : "); +sigma=(nT*mu_n+pT*mu_p)*q;//(ohm-cm)^-1 +rho=1/sigma;//ohm-cm +R=rho*l/(a*10^-2);//ohm +V=2;//volt +I=V/R;//A +disp(I*1000,"Current, I(mA) : "); diff --git a/2198/CH1/EX1.16.5/Ex1_16_5.sce b/2198/CH1/EX1.16.5/Ex1_16_5.sce new file mode 100755 index 000000000..3e55e148a --- /dev/null +++ b/2198/CH1/EX1.16.5/Ex1_16_5.sce @@ -0,0 +1,19 @@ +//Ex 1.16.5 +clc;clear;close; +format('v',9); + +//Given : +A=2.3*10^-4;//m^2 +n=1.5*10^16;//per m^3 +l=1;//mm +mu_n=1400;//cm^2/V-s +mu_p=500;//cm^2/V-s +p=n;//per m^3 +ni=n;//per m^3 +q=1.6*10^-19;//Coulomb +sigma_i=ni*(mu_n*10^-4+mu_p*10^-4)*q;//(ohm-m)^-1 +rho_i=1/sigma_i;//ohm-m +R=rho_i*l*10^-3/A;//ohm +V=9;//volt +I=V/R;//A +disp(I*1000,"Current, I(mA) : "); diff --git a/2198/CH1/EX1.16.6/Ex1_16_6.sce b/2198/CH1/EX1.16.6/Ex1_16_6.sce new file mode 100755 index 000000000..79dc66366 --- /dev/null +++ b/2198/CH1/EX1.16.6/Ex1_16_6.sce @@ -0,0 +1,15 @@ +//Ex 1.16.6 +clc;clear;close; +format('v',9); + +//Given : +ND=10^14;//per m^3 +Jn=10;//mA/cm^2 +E=3;//V/cm +T=27+273;//K +q=1.6*10^-19;//Coulomb +mu_n=1500;//cm^2/V-s +Dn=mu_n/39;//Diffusion constant +n=ND;//per m^3 +dnBYdx=((Jn*10^-3/10^-4)-n*q*mu_n*E)/q/Dn;//concentration gradient +disp(dnBYdx,"Concentration gradient, dn/dx : "); diff --git a/2198/CH1/EX1.16.7/Ex1_16_7.sce b/2198/CH1/EX1.16.7/Ex1_16_7.sce new file mode 100755 index 000000000..8c28da157 --- /dev/null +++ b/2198/CH1/EX1.16.7/Ex1_16_7.sce @@ -0,0 +1,23 @@ +//Ex 1.16.7 +clc;clear;close; +format('v',9); + +//Given : +ND=10^13;//per m^3 +NA=10^14;//per m^3 +rho_i=44;//ohm-cm +E=3;//V/cm +q=1.6*10^-19;//Coulomb +mu_n=0.38;//m^2/V-s +mu_p=0.18;//m^2/V-s +ni=2.5*10^19;//per m^3 +//n=p+(ND-NA);//per cm^3 +//n*p=ni^2 implies (p+(ND-NA))*p=ni^2 +//p^2+(ND-NA)*p-ni^2=0 +m=[1 (ND-NA) -ni^2];//polynomial +p=roots(m);//per m^3 +p=p(1);//taking only +ve value +n=ni^2/p;//per m^3 +J=(n*mu_n+p*mu_p)*q*(E/10^-2);//A/m^2 +disp(J,"Total current density(A/m^2) : "); +//Ans in the textbook is not accurate. diff --git a/2198/CH1/EX1.16.8/Ex1_16_8.sce b/2198/CH1/EX1.16.8/Ex1_16_8.sce new file mode 100755 index 000000000..14300bb70 --- /dev/null +++ b/2198/CH1/EX1.16.8/Ex1_16_8.sce @@ -0,0 +1,20 @@ +//Ex 1.16.8 +clc;clear;close; +format('v',9); + +//Given : +T=300;//K +ni=2.5*10^13;//per cm^3 +mu_n=3800;//cm^2/V-s +mu_p=1800;//cm^2/V-s +q=1.6*10^-19;//Coulomb +sigma_i=ni*(mu_n+mu_p)*q/10^-2;//(ohm-m)^-1 +disp(sigma_i,"Conductivity of intrinsic Ge in (ohm-m)^-1 : "); +ND=4.4*10^22/10^7;//per cm^3 +n=ND;//per cm^3 +sigma_n=n*mu_n*q/10^-2;//(ohm-m)^-1 +disp(sigma_n,"Conductivity after adding donor impurity in (ohm-m)^-1 : "); +NA=4.4*10^22/10^7;//per cm^3 +p=NA;//per cm^3 +sigma_p=p*mu_p*q/10^-2;//(ohm-m)^-1 +disp(sigma_p,"Conductivity after adding acceptor impurity in (ohm-m)^-1 : "); diff --git a/2198/CH1/EX1.40.1/Ex1_40_1.sce b/2198/CH1/EX1.40.1/Ex1_40_1.sce new file mode 100755 index 000000000..aa85a9e7f --- /dev/null +++ b/2198/CH1/EX1.40.1/Ex1_40_1.sce @@ -0,0 +1,10 @@ +//Ex 1.40.1 +clc;clear;close; +format('v',9); + +//Given : +ND=10^17;//per cm^3 +ni=1.5*10^10;//per cm^3 +no=ND;//per cm^3///Nd>>ni +po=ni^2/no;//per cm^3 +disp(po,"Equilibrium hole concentration (per cm^3) : "); diff --git a/2198/CH1/EX1.40.10/Ex1_40_10.sce b/2198/CH1/EX1.40.10/Ex1_40_10.sce new file mode 100755 index 000000000..d6b95afd1 --- /dev/null +++ b/2198/CH1/EX1.40.10/Ex1_40_10.sce @@ -0,0 +1,12 @@ +//Ex 1.40.10 +clc;clear;close; +format('v',9); + +//Given : +rho=9.6*10^-2;//ohm-m +mu_n=1300;//cm^2/V-s +q=1.6*10^-19;//Coulomb +sigma_n=1/rho;//(ohm-m)^-1 +ND=sigma_n/q/(mu_n*10^-4);//per m^3 +ni=5*10^22*10^6;//per m^3 +disp(ND/ni,"Ratio of donor atom to Si atom : "); diff --git a/2198/CH1/EX1.40.11/Ex1_40_11.sce b/2198/CH1/EX1.40.11/Ex1_40_11.sce new file mode 100755 index 000000000..b698d23ce --- /dev/null +++ b/2198/CH1/EX1.40.11/Ex1_40_11.sce @@ -0,0 +1,10 @@ +//Ex 1.40.11 +clc;clear;close; +format('v',9); + +//Given : +ni=1.5*10^10;//per cm^3 +n_n=2.25*10^15;//per cm^3 +disp(n_n,"Equillibrium electron density(per cm^3) : "); +p_n=ni^2/n_n;//per cm^3 +disp(p_n,"Equillibrium hole density(per cm^3) : "); diff --git a/2198/CH1/EX1.40.12/Ex1_40_12.sce b/2198/CH1/EX1.40.12/Ex1_40_12.sce new file mode 100755 index 000000000..62527923c --- /dev/null +++ b/2198/CH1/EX1.40.12/Ex1_40_12.sce @@ -0,0 +1,9 @@ +//Ex 1.40.12 +clc;clear;close; +format('v',9); + +//Given : +NA=2*10^16;//per cm^3 +ND=10^16;//per cm^3 +p=NA-ND;//per cm^3 +disp(p,"Material is p-type & Carrier concentration(holes per cm^3) : "); diff --git a/2198/CH1/EX1.40.13/Ex1_40_13.sce b/2198/CH1/EX1.40.13/Ex1_40_13.sce new file mode 100755 index 000000000..b2e7a8652 --- /dev/null +++ b/2198/CH1/EX1.40.13/Ex1_40_13.sce @@ -0,0 +1,9 @@ +//Ex 1.40.13 +clc;clear;close; +format('v',9); + +//Given : +del_n=10^15;//per cm^3 +tau_p=10*10^-6;//sec +rate=del_n/tau_p;//rate of generation minority carrier +disp(rate,"Rate of generation of minority carrier(electron hole pair/sec/cm^3) : "); diff --git a/2198/CH1/EX1.40.14/Ex1_40_14.sce b/2198/CH1/EX1.40.14/Ex1_40_14.sce new file mode 100755 index 000000000..841a6bcf3 --- /dev/null +++ b/2198/CH1/EX1.40.14/Ex1_40_14.sce @@ -0,0 +1,9 @@ +//Ex 1.40.14 +clc;clear;close; +format('v',9); + +//Given : +E=10;//V/cm +v=1/(20*10^-6);//m/s +mu=v/E;//cm^2/V-s +disp(mu,"Mobility(cm^2/V-s) : "); diff --git a/2198/CH1/EX1.40.15/Ex1_40_15.sce b/2198/CH1/EX1.40.15/Ex1_40_15.sce new file mode 100755 index 000000000..bcf1cb27a --- /dev/null +++ b/2198/CH1/EX1.40.15/Ex1_40_15.sce @@ -0,0 +1,30 @@ +//Ex 1.40.15 +clc;clear;close; +format('v',9); + +//Given : +ND=4.5*10^15;//per cm^3 +A=1*10^-2;//cm^2 +l=10;//cm +tau_p=1*10^-6;//sec +tau_n=1*10^-6;//sec +Dp=12;//cm^2/sec +Dn=30;//cm^2/sec +q=1.6*10^-19;//Coulomb +del_p=10^21;//electron hole pair/cm^3/sec +x=34.6*10^-4;//cm +Kdash=26;//mV(Kdash is taken as K*T/q) +ni=1.5*10^10;//per cm^3 +no=ND;//per cm^3//ND<>ni +po=ni^2/no;//per cm^3 +KT=0.0259;//constant +delEf=KT*log(no/ni);//eV +disp("Fermi level, Ef = Ei+"+string(delEf)+" eV"); diff --git a/2198/CH1/EX1.40.4/Ex1_40_4.sce b/2198/CH1/EX1.40.4/Ex1_40_4.sce new file mode 100755 index 000000000..6ba1100d5 --- /dev/null +++ b/2198/CH1/EX1.40.4/Ex1_40_4.sce @@ -0,0 +1,14 @@ +//Ex 1.40.4 +clc;clear;close; +format('v',9); + +//Given : +K=1.38*10^-23;//J/K +T=27+273;//K +e=1.6*10^-19;//constant +mu_n=0.17;//m^2/V-s +mu_p=0.025;//m^2/V-s +Dn=K*T/e*mu_n;//m^2/s +disp(Dn,"Diffusion coffiecients of electron(m^2/s) : "); +Dp=K*T/e*mu_p;//m^2/s +disp(Dp,"Diffusion coffiecients of holes(m^2/s) : "); diff --git a/2198/CH1/EX1.40.5/Ex1_40_5.sce b/2198/CH1/EX1.40.5/Ex1_40_5.sce new file mode 100755 index 000000000..3e8f5b84f --- /dev/null +++ b/2198/CH1/EX1.40.5/Ex1_40_5.sce @@ -0,0 +1,15 @@ +//Ex 1.40.5 +clc;clear;close; +format('v',9); + +//Given : +K=1.38*10^-23;//J/K +T=27+273;//K +e=1.6*10^-19;//constant +del_no=10^20;//per.m^3 +tau_n=10^-7;//s +mu_n=0.15;//m^2/V-s +Dn=K*T/e*mu_n;//m^2/s +Ln=sqrt(Dn*tau_n);//m +Jn=e*Dn*del_no/Ln;//A/m^2 +disp(Jn,"Diffusion current density(A/m^2) : "); diff --git a/2198/CH1/EX1.40.6/Ex1_40_6.sce b/2198/CH1/EX1.40.6/Ex1_40_6.sce new file mode 100755 index 000000000..fa90f9542 --- /dev/null +++ b/2198/CH1/EX1.40.6/Ex1_40_6.sce @@ -0,0 +1,13 @@ +//Ex 1.40.6 +clc;clear;close; +format('v',9); + +//Given : +sigma_n=0.1;//(ohm-cm)^-1 +mu_n=1300;//m^2/V-s +ni=1.5*10^10;//per cm^3 +q=1.6*10^-19;//Coulomb +n_n=sigma_n/q/mu_n;//per cm^3 +p_n=ni^2/n_n;//per cm^3 +p_n=p_n*10^6;//per m^3 +disp(p_n,"Concentration of holes(per m^3) : "); diff --git a/2198/CH1/EX1.40.7/Ex1_40_7.sce b/2198/CH1/EX1.40.7/Ex1_40_7.sce new file mode 100755 index 000000000..a5c1a908b --- /dev/null +++ b/2198/CH1/EX1.40.7/Ex1_40_7.sce @@ -0,0 +1,15 @@ +//Ex 1.40.7 +clc;clear;close; +format('v',9); + +//Given : +L=100*10^-6;//m +A=10^-7*10^-6;//m^2 +mu_e=0.13;//m^2/V-s +mu_h=0.05;//m^2/V-s +tau_h=10^-6;//sec +V=12;//volt +E=V/L;//v/m +tn=L^2/(mu_e*V);//sec +Gain=tau_h/tn*(1+mu_h/mu_e);// +disp(Gain,"Photoconductor gain : "); diff --git a/2198/CH1/EX1.40.8/Ex1_40_8.sce b/2198/CH1/EX1.40.8/Ex1_40_8.sce new file mode 100755 index 000000000..bbd00bb67 --- /dev/null +++ b/2198/CH1/EX1.40.8/Ex1_40_8.sce @@ -0,0 +1,20 @@ +//Ex 1.40.8 +clc;clear;close; +format('v',7); + +//Given : +T=300;//K +rho_i=45;//ohm-cm +//part (i) +mu_n=3800;//cm^2/V-s +mu_p=1800;//cm^2/V-s +ni=2.5*10^13;//per cm^3 +q=1.6*10^-19;//Coulomb +sigma=ni*q*(mu_n+mu_p);//(ohm-cm)^-1 +rho=1/sigma;//ohm-cm +disp(round(rho),"Resistivity of intrinsic Ge at 300K(ohm-cm) : "); +//part (ii) +ND=4.4*10^22/10^8;//per cm^3 +sigma=ND*q*mu_n;//(ohm-cm)^-1 +rho=1/sigma;//ohm-cm +disp(rho,"Resistivity of doped Ge(ohm-cm) : "); diff --git a/2198/CH1/EX1.40.9/Ex1_40_9.sce b/2198/CH1/EX1.40.9/Ex1_40_9.sce new file mode 100755 index 000000000..f822ad95b --- /dev/null +++ b/2198/CH1/EX1.40.9/Ex1_40_9.sce @@ -0,0 +1,11 @@ +//Ex 1.40.9 +clc;clear;close; +format('v',9); + +//Given : +ni=10^16;//per m^3 +ND=10^22;//per m^3 +n=ND;//per m^3//ND>>ni +disp(n,"Electron concentration(per m^3) : "); +p=ni^2/n;//per m^3 +disp(p,"Electron concentration(per m^3) : "); diff --git a/2198/CH1/EX1.5.1/Ex1_5_1.sce b/2198/CH1/EX1.5.1/Ex1_5_1.sce new file mode 100755 index 000000000..bb3a3e04d --- /dev/null +++ b/2198/CH1/EX1.5.1/Ex1_5_1.sce @@ -0,0 +1,19 @@ +//Ex 1.5.1 +clc;clear;close; +format('v',6); + +//Given : +t1=35;//degreeC +t2=60;//degreeC +T1=t1+273;//K +T2=t2+273;//K +disp("Forbidden gap for Si : "); +EG1_Si=1.21-3.6*10^-4*T1;//eV +disp(EG1_Si,"at 35 degree C in eV") +EG2_Si=1.21-3.6*10^-4*T2;//eV +disp(EG2_Si,"at 60 degree C in eV") +disp("Forbidden gap for Ge : "); +EG1_Ge=0.785-2.23*10^-4*T1;//eV +disp(EG1_Ge,"at 35 degree C in eV") +EG2_Ge=0.785-2.23*10^-4*T2;//eV +disp(EG2_Ge,"at 60 degree C in eV") diff --git a/2198/CH1/EX1.9.1/Ex1_9_1.sce b/2198/CH1/EX1.9.1/Ex1_9_1.sce new file mode 100755 index 000000000..2fa0b2ccc --- /dev/null +++ b/2198/CH1/EX1.9.1/Ex1_9_1.sce @@ -0,0 +1,17 @@ +//Ex 1.9.1 +clc;clear;close; +format('v',9); + +//Given : +l=6*10^-2;//m +V=1;//Volt +A=10*10^-6;//m^2 +I=10*10^-3;//A +q=1.602*10^-19;//Coulomb +mu_n=1300*10^-4;//m^2/V-s +E=V/l;//V/m +v=mu_n*E;//m/s +J=I/A;//A/m^2 +n=J/(q*mu_n*E);//per m^3 +disp(n,"(i) Concentration of electron(m^3) : "); +disp(v,"(ii) Drift velocity(m/s) : "); diff --git a/2198/CH1/EX1.9.2/Ex1_9_2.sce b/2198/CH1/EX1.9.2/Ex1_9_2.sce new file mode 100755 index 000000000..38cecbb4d --- /dev/null +++ b/2198/CH1/EX1.9.2/Ex1_9_2.sce @@ -0,0 +1,11 @@ +//Ex 1.9.2 +clc;clear;close; +format('v',9); + +//Given : +l=6*10^-2;//m +V=12;//Volt +v=73;//m/s +E=V/l;//V/m +mu=v/E;//m^2/V-s +disp(mu,"Electron mobility(m^2/V-s) : "); -- cgit