doping

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11 Terms

1
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conduction

electrons move through the ________ band

2
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small

semiconductors have a ____ band gap

3
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doping

how do we artificially move the gap for a material

4
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adding or removing electrons from bands by introducing foreign atoms into the crystal lattice of a semiconductor.

what is doping?

5
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n-type

introducing electron-rich atoms is called _____ doping

6
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p-type

introducing electron-poor atoms is called _____ doping

7
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raise, negative electrons

n-type semiconductors essentially (raise or lower) the valence band. The main charger carriers are ______ ______

8
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lower, positive holes

p-type semiconductors essentially (raise or lower) the valence band. The main charger carriers are ______ ______

9
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directionality

if you have a p-type and n-type next to each other you can induce __________ in electron flow

10
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downhill, uphill

electrons flow _______ relative to potentiala energy, hole flow ________ relative to potential energy

11
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excited, external

by choosing appropriate materials, bands can be aligned in such a way that an ______ electron can hop from one material to the next until it reaches an _______ circuit