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

---
 2792/CH11/EX11.9/Ex11_9.sce | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100755 2792/CH11/EX11.9/Ex11_9.sce

(limited to '2792/CH11/EX11.9')

diff --git a/2792/CH11/EX11.9/Ex11_9.sce b/2792/CH11/EX11.9/Ex11_9.sce
new file mode 100755
index 000000000..7b25baeb0
--- /dev/null
+++ b/2792/CH11/EX11.9/Ex11_9.sce
@@ -0,0 +1,34 @@
+clc
+h=1.05*10^-34
+disp("h = "+string(h)+"Js") //initializing value of reduced plancks constant or dirac constant or h-bar
+mo = 9.1*10^-31
+disp("mo = "+string(mo)+"kg") //initializing value of mass of electron
+me = 0.067*9.1*10^-31
+disp("me* = "+string(me)+"kg") //initializing value of electron mass of InAs
+kbT = 0.026
+disp("kbT = "+string(kbT)+"eV") //initializing value of kbT at 300K
+mh = 0.45*9.1*10^-31
+disp("mh*= "+string(mh)+"kg")//initializing value of hole density of state mass
+To = .6*10^-9
+disp("To = "+string(To)+"s") //initializing value of minimum recombination time
+tnr = 10^-7
+disp("tnr = "+string(tnr)+"s") //initializing value of nonradiative recombination time
+p = 10^21
+disp("p = "+string(p)+"m^-3") //initializing value of excess electron or hole density injected
+mr = 1/((1/me)+(1/mh))
+disp("The reduced mass for the e-h system is mr* = 1/((1/me)+(1/mh)) = "+string(mr)+"kg")//calculation
+disp("           For low p-doping such as 10^16, the recombination time is given as below")
+T1 = (p/(2*To))*((2*(%pi)*h^2)/(kbT*1.6*10^-19*(me+mh)))^(3/2)
+disp("T = (p/(2*To))*((2*(%pi)*h^2)/(kbT*1.6*10^-19*(me+mh)))^(3/2) = "+string(T1)+"s^-1")//calculation
+Tr1 = 1/T1
+disp("The e-h recombination time is Tr1 = 1/T1 = "+string(Tr1)+"s")//calculation
+nQr1 = 1/(1+(Tr1/tnr))
+disp("The internal quantum efficiency  is nQr1 = 1/(1+(Tr1/tnr)) = "+string(nQr1))//calculation
+disp("         For high p-doping such as 5*10^17, the recombination time is given as below")
+T2 = (1/To)*((mr/mh)^(3/2))
+disp("T2 = (1/To)*((mr/mh)^(3/2)) = "+string(T2)+"s^-1")//calculation
+Tr2 = 1/T2
+disp("The e-h recombination time is Tr2 = 1/T2 = "+string(Tr2)+"s")//calculation
+nQr2 = 1/(1+(Tr2/tnr))
+disp("The internal quantum efficiency  is nQr2 = 1/(1+(Tr2/tnr)) = "+string(nQr2))//calculation
+// Note : due to different precisions taken by me and the author ... my answer differ 
-- 
cgit