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diff --git a/Advance_Semiconductor_Devices_by_S._Sharma/ChapterNo7.ipynb b/Advance_Semiconductor_Devices_by_S._Sharma/ChapterNo7.ipynb new file mode 100755 index 00000000..431c4340 --- /dev/null +++ b/Advance_Semiconductor_Devices_by_S._Sharma/ChapterNo7.ipynb @@ -0,0 +1,154 @@ +{
+ "metadata": {
+ "name": ""
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+ {
+ "cells": [
+ {
+ "cell_type": "markdown",
+ "metadata": {},
+ "source": [
+ "<h1> Chpater No 7: Optoelectonic Devices <h1>"
+ ]
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 7.1, Page No 283"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math \n",
+ "\n",
+ "#initialisation of variables\n",
+ "Vout = 5.0 #in V\n",
+ "V = 1.5 #ON state voltage drop across LED in V\n",
+ "I = 5.0 #in mA\n",
+ "\n",
+ "#CALCULATIONS\n",
+ "I = I*10**-3 #in A\n",
+ "R = (Vout-V)/I #in ohm\n",
+ "\n",
+ "#RESULTS\n",
+ "print('Resistance is =%.f \u03a9' %R)"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Resistance is =700 \u03a9\n"
+ ]
+ }
+ ],
+ "prompt_number": 1
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 7.2, Page No 306"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math\n",
+ "\n",
+ "#initialisation of variables\n",
+ "N_A = 7.5*10**24 #in atoms/m^3\n",
+ "N_D = 1.5*10**22 #in atoms/m^3\n",
+ "D_e = 25*10**-4 #in m^2/s\n",
+ "D_n = 1*10**-3 #in m^2/s\n",
+ "V_T = 26*10**-3 #in V\n",
+ "\n",
+ "#CALCULATIONS\n",
+ "Torque_eo = 500*10**-9 #in sec\n",
+ "Torque_ho = 100*10**-9 #in sec\n",
+ "e = 1.6*10**-19 #in C\n",
+ "n_i = 1.5*10**16 #in /m^3\n",
+ "I_lambda = 12.5 #in mA/cm^2\n",
+ "I_lambda= I_lambda*10**-3 #in A/cm^2\n",
+ "L_e = math.sqrt(D_e*Torque_eo) #in m\n",
+ "L_n = math.sqrt(D_n*Torque_ho) #in m\n",
+ "J_s = e*((n_i)**2)*( ((D_e)/(L_e*N_A)) + ((D_n)/(L_n*N_D)) ) #in A/m^2\n",
+ "J_s= J_s*10**-4 #in A/cm^2\n",
+ "V_OC = V_T*(math.log(1+(I_lambda/J_s))) #in V\n",
+ "\n",
+ "#RESULTS\n",
+ "print('Open circuit voltage is =%.2f volts ' %V_OC)\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Open circuit voltage is =0.52 volts \n"
+ ]
+ }
+ ],
+ "prompt_number": 2
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 7.3, Page No 307"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math\n",
+ "\n",
+ "#initialisation of variables\n",
+ "Phi_o = 1.0*10**21 #in m^-2s^-1\n",
+ "alpha =1.0*10**5 #in m^-1\n",
+ "e= 1.6*10**-19 #in C\n",
+ "\n",
+ "#CALCULATIONS\n",
+ "G_L1 = alpha*Phi_o #in m^-3s^-1\n",
+ "W = 26.0 #in \u00b5m\n",
+ "W = W * 10**-6 #in m\n",
+ "G_L2 = alpha*Phi_o*(math.e)**((-alpha)*W) #in m^-3s^-1\n",
+ "#temp=(1-math.e)**(-(alpha)*W)\n",
+ "J_L = e*Phi_o*(1-math.e**(-(alpha)*W)) #in A/m^2\n",
+ "J_L = J_L * 10**3*10**-4 #in mA/cm^2\n",
+ "\n",
+ "#RESULTS\n",
+ "print('Photo current density is =%.1f mA/cm^2' %J_L)"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Photo current density is =14.8 mA/cm^2\n"
+ ]
+ }
+ ],
+ "prompt_number": 3
+ }
+ ],
+ "metadata": {}
+ }
+ ]
+}
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