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Diffstat (limited to 'Materials_Science/Chapter16.ipynb')
| -rwxr-xr-x | Materials_Science/Chapter16.ipynb | 275 |
1 files changed, 0 insertions, 275 deletions
diff --git a/Materials_Science/Chapter16.ipynb b/Materials_Science/Chapter16.ipynb deleted file mode 100755 index 3ff4c3db..00000000 --- a/Materials_Science/Chapter16.ipynb +++ /dev/null @@ -1,275 +0,0 @@ -{
- "metadata": {
- "name": "",
- "signature": "sha256:267ebfe4747dc282d89f7efa1dce2f2f4b1f305bd03bf7fa58c0d8bd7749c9c1"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
- {
- "cells": [
- {
- "cell_type": "heading",
- "level": 1,
- "metadata": {},
- "source": [
- "Chapter16:Semiconductors"
- ]
- },
- {
- "cell_type": "heading",
- "level": 2,
- "metadata": {},
- "source": [
- "Ex16.1:pg-315"
- ]
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [
- "#Example 16.1 : concentration\n",
- "\n",
- "#given data :\n",
- "e=1.602*10**-19;# Coulomb\n",
- "sigma_i=5*10**-4;# in ohm/m\n",
- "mu_n=0.14;# in m**2/V-sec\n",
- "mu_p=0.05;# in m**2/V-sec\n",
- "n_i=sigma_i/(e*(mu_n+mu_p));\n",
- "print round(n_i*10**6,-20),\"= the concentration,n_i(/cm**3) \"\n"
- ],
- "language": "python",
- "metadata": {},
- "outputs": [
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "1.64e+22 = the concentration,n_i(/cm**3) \n"
- ]
- }
- ],
- "prompt_number": 27
- },
- {
- "cell_type": "heading",
- "level": 2,
- "metadata": {},
- "source": [
- "Ex16.2:pg-315"
- ]
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [
- "#Example 16.2 : intrinsic carrier\n",
- " \n",
- "\n",
- "#given data :\n",
- "e=1.602*10**-19; # Coulomb\n",
- "p_i=2*10**-4;# in ohm-m\n",
- "mu_n=6;# in m**2/V-sec\n",
- "mu_p=0.2;# in m**2/V-sec\n",
- "n_i=1/(e*(mu_n+mu_p)*p_i);\n",
- "print round(n_i,-19),\"= the intrinsic carrier,n_i(/m**3) \"\n"
- ],
- "language": "python",
- "metadata": {},
- "outputs": [
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "5.03e+21 = the intrinsic carrier,n_i(/m**3) \n"
- ]
- }
- ],
- "prompt_number": 28
- },
- {
- "cell_type": "heading",
- "level": 2,
- "metadata": {},
- "source": [
- "Ex16.3:pg-315"
- ]
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [
- "#Example 16.3 : neglect the intrinsic conductivity\n",
- " \n",
- "\n",
- "#given data :\n",
- "e=1.6*10**-19; # Coulomb\n",
- "sigma=10**-12;# in mhos/m\n",
- "mu_n=0.18;# in m**2/V-sec\n",
- "n=sigma/(e*mu_n);\n",
- "N=n; # amount of n type impurity\n",
- "print round(N),\"in(/m**3) \"\n",
- "# The answer is slightly different in textbook due to approximation"
- ],
- "language": "python",
- "metadata": {},
- "outputs": [
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "34722222.0 in(/m**3) \n"
- ]
- }
- ],
- "prompt_number": 15
- },
- {
- "cell_type": "heading",
- "level": 2,
- "metadata": {},
- "source": [
- "Ex16.4:pg-315"
- ]
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [
- "#Example 16.4 : number of electron carriers\n",
- " \n",
- "\n",
- "#given data :\n",
- "e=1.6*10**-19; # Coulomb\n",
- "p=20*10**-2;# in ohm-m\n",
- "mu_n=100*10**-4;# in m**2/V-sec\n",
- "n=1/(e*mu_n*p);\n",
- "print round(n,-19),\"= number of electrons carrier,n(/m**3) \"\n"
- ],
- "language": "python",
- "metadata": {},
- "outputs": [
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "3.12e+21 = number of electrons carrier,n(/m**3) \n"
- ]
- }
- ],
- "prompt_number": 30
- },
- {
- "cell_type": "heading",
- "level": 2,
- "metadata": {},
- "source": [
- "Ex16.5:pg-316"
- ]
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [
- "#Example 16.5 : concentration of impurity\n",
- "import math\n",
- "e=1.6*10**-19;# Coulomb\n",
- "l=10;#in mm\n",
- "d=1;#in mm\n",
- "r=100;#in ohms\n",
- "up=0.19;#mobilty of electrons in V-sec\n",
- "a=(math.pi*((d*10**-3)**2))/4;#area in m**2\n",
- "p=((r*a))/(l*10**-3);#resistivity in Ohm-cm\n",
- "n=((1/(p*e*up)));#concentration in per m**3\n",
- "print round(n,-19),\"is impurity concentration is in per m**3\"\n"
- ],
- "language": "python",
- "metadata": {},
- "outputs": [
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "4.19e+21 is impurity concentration is in per m**3\n"
- ]
- }
- ],
- "prompt_number": 32
- },
- {
- "cell_type": "heading",
- "level": 2,
- "metadata": {},
- "source": [
- "Ex16.6:pg-316"
- ]
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [
- "#Example 16.6 : intrinsic carrier density\n",
- " \n",
- "#given data :\n",
- "\n",
- "e=1.602*10**-19; # in coulomb\n",
- "p=3000.0;# in ohm/m\n",
- "sigma=1/p;# in ohm/m\n",
- "mu_n=0.14;# in m**2/V-sec\n",
- "mu_p=0.05;# in m**2/V-sec\n",
- "n_i=sigma/(e*(mu_n+mu_p));\n",
- "print round(n_i,-13),\"is the concentration,n_i(/m**3) \"\n"
- ],
- "language": "python",
- "metadata": {},
- "outputs": [
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "1.095e+16 is the concentration,n_i(/m**3) \n"
- ]
- }
- ],
- "prompt_number": 39
- },
- {
- "cell_type": "heading",
- "level": 2,
- "metadata": {},
- "source": [
- "Ex16.7:pg-317"
- ]
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [
- "#Example 16.7 : conductivity\n",
- " \n",
- "#given data :\n",
- "e=1.602*10**-19; # in coulomb\n",
- "n_i=5.021*10**15; # in m**-3\n",
- "mu_n=0.48;# in m**2/V-sec\n",
- "mu_p=0.013;# in m**2/V-sec\n",
- "sigma=n_i*(e*(mu_n+mu_p));\n",
- "print round(sigma,9),\"= the conductivity,sigma(ohm**-1 m**-1) \"\n"
- ],
- "language": "python",
- "metadata": {},
- "outputs": [
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "0.000396552 = the conductivity,sigma(ohm**-1 m**-1) \n"
- ]
- }
- ],
- "prompt_number": 42
- }
- ],
- "metadata": {}
- }
- ]
-}
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