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Diffstat (limited to 'modern_physics_by_Satish_K._Gupta/chap33.ipynb')
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diff --git a/modern_physics_by_Satish_K._Gupta/chap33.ipynb b/modern_physics_by_Satish_K._Gupta/chap33.ipynb new file mode 100644 index 00000000..4183f15e --- /dev/null +++ b/modern_physics_by_Satish_K._Gupta/chap33.ipynb @@ -0,0 +1,304 @@ +{
+ "metadata": {
+ "name": "",
+ "signature": "sha256:52e9ff37336a0b3392520c7ec0e817b37056adea4740de3297c85e4e3e83dc56"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+ {
+ "cells": [
+ {
+ "cell_type": "heading",
+ "level": 1,
+ "metadata": {},
+ "source": [
+ "Chapter 33 Solids"
+ ]
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 33.1 Page no 904"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#Given\n",
+ "Eg=0.72*1.6*10**-19 #J\n",
+ "h=6.62*10**-34\n",
+ "c=3*10**8\n",
+ "\n",
+ "#Calculation\n",
+ "L=(h*c)/Eg\n",
+ "\n",
+ "#Result\n",
+ "print\"The maximum wavelength of electromagnetic radiation is\",round(L*10**6,3)*10**-6,\"m\""
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The maximum wavelength of electromagnetic radiation is 1.724e-06 m\n"
+ ]
+ }
+ ],
+ "prompt_number": 6
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 33.2 Page no 904"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#Given\n",
+ "n1=1.5*10**16 #/m**3\n",
+ "nh=4.5*10**22\n",
+ "\n",
+ "#Calculation\n",
+ "ne=n1**2/nh\n",
+ "\n",
+ "#Result\n",
+ "print\"ne in the doping silicon is\",ne*10**-9,\"*10**9 /m**3\""
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "ne in the doping silicon is 5.0 *10**9 /m**3\n"
+ ]
+ }
+ ],
+ "prompt_number": 9
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 33.3 Page no 904"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#Given\n",
+ "ne=8*10**19 #/m**3\n",
+ "nh=5*10**18\n",
+ "ue=2.3 #m**2/V/S\n",
+ "uh=0.01\n",
+ "e=1.6*10**-19\n",
+ "\n",
+ "#Calculation\n",
+ "a=1/(e*((ne*ue)+(nh*uh)))\n",
+ "\n",
+ "#Result\n",
+ "print\"(a) The semiconductor has greater electron concentration, it is n-type semiconductor\"\n",
+ "print\"(b) Resistivity is\", round(a*10**2,3),\"*10**-2 ohm/m\""
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "(a) The semiconductor has greater electron concentration, it is n-type semiconductor\n",
+ "(b) Resistivity is 3.396 *10**-2 ohm/m\n"
+ ]
+ }
+ ],
+ "prompt_number": 16
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 33.4 Page no 904"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#Given\n",
+ "e=1.6*10**-19 #C\n",
+ "A=500 #ohm**-1 m**-1\n",
+ "Ue=0.39 #m**2 V**-1 s**-1\n",
+ "\n",
+ "#Calculation\n",
+ "Ne=A/(e*Ue)\n",
+ "\n",
+ "#Result\n",
+ "print\"The number density of donor atoms is\",round(Ne*10**-21,3)*10**21,\"m**3\""
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The number density of donor atoms is 8.013e+21 m**3\n"
+ ]
+ }
+ ],
+ "prompt_number": 23
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 33.5 Page no 904"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#Given\n",
+ "F=1.6*10**-19 #E\n",
+ "W=4.2*10**8\n",
+ "e=2.4\n",
+ "w=4.2*10**-8\n",
+ "\n",
+ "#Calculation\n",
+ "S=F*W\n",
+ "A=S/F\n",
+ "E=e/w\n",
+ "\n",
+ "#Result\n",
+ "print\"Electric field is\", round(E*10**-7,2),\"*10**7 V/m\""
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Electric field is 5.71 *10**7 V/m\n"
+ ]
+ }
+ ],
+ "prompt_number": 30
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 33.6 Page no 904"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#Given\n",
+ "h=6.62*10**-34\n",
+ "c=3*10**8\n",
+ "l=630*10**-9\n",
+ "e=1.6*10**-19\n",
+ "\n",
+ "#Calculation\n",
+ "Eg=(h*c)/(l*e)\n",
+ "\n",
+ "#Result\n",
+ "print\"Width of the forbidden energy gap is\",round(Eg,2),\"eV\""
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Width of the forbidden energy gap is 1.97 eV\n"
+ ]
+ }
+ ],
+ "prompt_number": 33
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 33.7 Page no 904"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#iven\n",
+ "A=10**-4 #m**2\n",
+ "l=0.1 #m\n",
+ "V=2 #V\n",
+ "T=300 #K\n",
+ "ue=0.135 #m**2/V/S\n",
+ "n=1.5*10**15 #/m**3\n",
+ "uh=0.048 #m**2/V/S\n",
+ "e=1.6*10**-19\n",
+ "ue1=0.39\n",
+ "uh1=0.19\n",
+ "n1=2.4*10**19\n",
+ "\n",
+ "#Calculation\n",
+ "E=V/l\n",
+ "ve=ue*E\n",
+ "vh=uh*E\n",
+ "Ie=e*A*n*ve\n",
+ "Ih=e*A*n*vh\n",
+ "I=Ie+Ih\n",
+ "ve1=ue1*E\n",
+ "ve2=uh1*E\n",
+ "Ie1=e*A*n1*ve1\n",
+ "Ie2=e*A*n1*ve2\n",
+ "I1=Ie1+Ie2\n",
+ "\n",
+ "#Result\n",
+ "print\"Electron current is\", Ie*10.0,\"A \\nHole current is\",Ih*10,\"A\"\n",
+ "print\"Magnitude of total current is\",I*10,\"A \\nTotal current when germanium is used is\",I1*10**3,\"*10**-3 A\""
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "Electron current is 6.48e-07 A \n",
+ "Hole current is 2.304e-07 A\n",
+ "Magnitude of total current is 8.784e-07 A \n",
+ "Total current when germanium is used is 4.4544 *10**-3 A\n"
+ ]
+ }
+ ],
+ "prompt_number": 48
+ }
+ ],
+ "metadata": {}
+ }
+ ]
+}
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