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How does electrical conductivity of a semiconductor change with temperature? why? |
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Answer» tion:well, conductivity of semi CONDUCTOR increase on increasing temperature.lets take pn junction diode( FORWARD bias) it have ONE side of +ve, and other -ve. when we apply small current + ve(holes) PUSHED by +ve side of battery.and - ve( electron) pushed by - ve side of battery , so there is barrier potential between them starts weaken then, current start rising if too much current is passed the then current will grow exponentially.and semiconductor HEATS gives mobility to electron , which is fixed in solid state of semiconductor, but now it's freethat's why conductivity increased .This is condition given for forward biased pn junction.if you have any confusion email me.Or comments here. |
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