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{
"metadata": {
"name": ""
},
"nbformat": 3,
"nbformat_minor": 0,
"worksheets": [
{
"cells": [
{
"cell_type": "heading",
"level": 1,
"metadata": {},
"source": [
"Chapter 16: Photoconductivity "
]
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 16.1, page no-416"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Pairs generated per second\n",
"\n",
"import math\n",
"#Variable Declaration\n",
"lam=0.4*10**-6 # wavelength of light\n",
"A=4*10**-6 # area of the crystal\n",
"in1=200.0 # intensity of light in W/m^2\n",
"h=6.626*10**-34 # Planck's constant\n",
"c=3*10**8 # speed of light\n",
"\n",
"\n",
"#Calculation\n",
"N=in1*A*lam/(h*c)\n",
"\n",
"\n",
"#Result\n",
"print('The number of pairs generated per second is %.3f * 10^14'%(N*10**-14))"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"The number of pairs generated per second is 16.098 * 10^14\n"
]
}
],
"prompt_number": 1
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 16.2, page no-417"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"# Wavelength of emitted radiation\n",
"\n",
"import math\n",
"#Variable Declaration\n",
"e=1.6*10**-19 # Charge of electron\n",
"eg=1.43 # band gap energy in eV\n",
"h=6.626*10**-34 # Planck's constant\n",
"c=3*10**8 # speed of light in m/s\n",
"\n",
"\n",
"#Calculation\n",
"E=e*eg \n",
"lam=h*c/E\n",
"\n",
"\n",
"#Result\n",
"print('The wavelength of emitted radiation is %.2f \u00b5m'%(lam*10**6))"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"The wavelength of emitted radiation is 0.87 \u00b5m\n"
]
}
],
"prompt_number": 2
}
],
"metadata": {}
}
]
}
|
