diff options
Diffstat (limited to '2243/CH11/EX11.11/Ex11_11.sce')
| -rwxr-xr-x | 2243/CH11/EX11.11/Ex11_11.sce | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/2243/CH11/EX11.11/Ex11_11.sce b/2243/CH11/EX11.11/Ex11_11.sce new file mode 100755 index 000000000..b8adcf9df --- /dev/null +++ b/2243/CH11/EX11.11/Ex11_11.sce @@ -0,0 +1,19 @@ +clc();
+clear;
+//Given :
+ni = 1.5*10^16; // ni for Si in m^-3
+mue = 0.135; // mobility of free electrons in m^2/Vs
+muh = 0.048; // mobility of holes in m^2/Vs
+Nd = 10^21; // phosphorus atoms/m^3
+e = 1.6*10^-19;// charge of an electron in C
+//(a)
+n = Nd; // electrons/m^3
+//(b)
+p = ni^2/Nd; // holes/m^3
+//(c)
+sigma = e*(n*mue + p*muh); // conductivity in mho m^-1
+rho = 1/sigma; // resistivity in ohm m
+
+printf("Major carrier concentration = %.1f x 10^21 electrons/m^3 \n",n*10^-21);
+printf("Minor carrier concentration = %.2f x 10^11 holes/m^3\n",p*10^-11);
+printf("Resistivity = %.3f ohm m",rho);
|