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{
"cells": [
{
"cell_type": "markdown",
"metadata": {},
"source": [
"# Chapter 7: CLASSIFICATION OF SOLIDS"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Example 7.1: CALCULATE_ENERGY_GAP.sce"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {
"collapsed": true
},
"outputs": [],
"source": [
"clc;clear;\n",
"//Example 7.1\n",
"\n",
"//given data\n",
"W=11000;//wavelength in angrstrom\n",
"\n",
"//calcuations\n",
"Eg=W/12400;\n",
"disp(Eg,'Energy Gap in eV')"
]
}
,
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Example 7.2: FIND_MOBILITY_OF_ELECTRONS.sce"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {
"collapsed": true
},
"outputs": [],
"source": [
"clc;clear;\n",
"//Example 7.2\n",
"\n",
"//given data\n",
"p=1.7*10^-6;//resistivity in ohm-cm\n",
"d=8.96;//density in gm/cc\n",
"W=63.5;\n",
"Na=6.02*10^23;//Avgraodo no. in 1/g mole\n",
"e=1.6*10^-19;//the charge on electron in C\n",
"\n",
"//calcualtions\n",
"n=8.96*Na/W;\n",
"ue=1/(p*e*n);\n",
"disp(ue,'mobilty of electrons in cm^2/V-s');"
]
}
,
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Example 7.3: FIND_RESISTIVITY.sce"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {
"collapsed": true
},
"outputs": [],
"source": [
"clc;clear;\n",
"//Example 7.3\n",
"\n",
"//given data\n",
"d1=2.5*10^19;//density of charge carries in 1/m^3\n",
"d2=4.2*10^28;//density of germanium atoms\n",
"ue=0.36;//mobilty of electrons in m^2/V-s\n",
"Na=6.02*10^23;//Avgraodo no. in 1/g mole\n",
"e=1.6*10^-19;//the charge on electron in C\n",
"\n",
"//calcualtions\n",
"Nd=d2/10^6;\n",
"cn=Nd*e*ue;\n",
"pn=1/cn;\n",
"disp(pn,'resistivity of doped germanium in ohm-m')"
]
}
,
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Example 7.4: CALCULATE_WAVELENGTH.sce"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {
"collapsed": true
},
"outputs": [],
"source": [
"clc;clear;\n",
"//Example 7.4\n",
"\n",
"//given data\n",
"Eg=0.75;//energy gap in eV\n",
"\n",
"//calcualtions\n",
"W=12400/Eg;\n",
"disp(W,'wavelength in angstrom')"
]
}
],
"metadata": {
"kernelspec": {
"display_name": "Scilab",
"language": "scilab",
"name": "scilab"
},
"language_info": {
"file_extension": ".sce",
"help_links": [
{
"text": "MetaKernel Magics",
"url": "https://github.com/calysto/metakernel/blob/master/metakernel/magics/README.md"
}
],
"mimetype": "text/x-octave",
"name": "scilab",
"version": "0.7.1"
}
},
"nbformat": 4,
"nbformat_minor": 0
}
|
