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

---
 2672/CH4/EX4.26/Ex4_26.sce | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100755 2672/CH4/EX4.26/Ex4_26.sce

(limited to '2672/CH4/EX4.26/Ex4_26.sce')

diff --git a/2672/CH4/EX4.26/Ex4_26.sce b/2672/CH4/EX4.26/Ex4_26.sce
new file mode 100755
index 000000000..e6917be6e
--- /dev/null
+++ b/2672/CH4/EX4.26/Ex4_26.sce
@@ -0,0 +1,26 @@
+//Example 4_26
+clc;
+clear;
+close;
+format('e',9);
+//given data : 
+T=300;//K
+e=1.6*10^-19;//C/electron
+disp("Part(a) :");
+sigma=100;//(ohm-cm)^-1
+ni=2.5*10^13;//cm^-3//For Ge
+mu_p=1800;//cm^2/V-s//For Ge
+//sigma=p0*e*mu_p, since p0>>n0
+p0=sigma/e/mu_p;//cm^-3
+n0=ni^2/p0*10^6;//m^-3
+disp(p0,"Concentration of holes(cm^-3)");
+disp(n0,"Concentration of electrones(m^-3)");
+disp("Part(b) :");
+sigma=0.1;//(ohm-cm)^-1
+ni=1.5*10^10;//cm^-3//For Si
+mu_n=1300;//cm^2/V-s//For Si
+//sigma=n0*e*mu_p, since n0>>p0
+n0=sigma/e/mu_n;//cm^-3
+p0=ni^2/n0*10^6;//m^-3
+disp(n0,"Concentration of electrones(cm^-3)");
+disp(p0,"Concentration of holes(m^-3)");
-- 
cgit