lab1 - University of Arizona Materials Science and...

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University of Arizona Materials Science and Engineering MSE 110: Solid State Chemistry Band Gap of a Semiconductor Date Performed: 1/30/08 Date Submitted: 2/6/08 Paul Sanders Measurement of the Band gap of a Semiconductor
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Introduction: The purpose of this experiment was to learn what a semiconductor is and does, as well as to discover the band gap of silicon, a semiconductor found often in today’s world. There are three types of electrical conductivity. There are insulators, which do not conduct electricity well, conductors, which conduct electricity extremely well, and then there are semiconductors. These are somewhere in-between conductors and insulators, and so they are part of both, but are also part of neither. One way to cause a semi-conductor to have an electrical flow is to heat it up to high temperatures so that the electros become excited and jump across the band gap (E g ). By measuring the voltage of the current, we can find the width of the band gap. Experimental Procedure
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lab1 - University of Arizona Materials Science and...

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