Questions

Question 1

Animation: Semiconductor diode junction

This question consists of a series of images (one per page) that form an animation. Flip the pages withyour fingers to view this animation (or click on the ”next” button on your viewer) frame-by-frame.

The following animation illustrates the behavior of charge carriers inside a semiconductor diode junction.

1

Conduction band

Valence band

EfEf

Conduction band

Valence band

P N

0 V

2

Conduction band

Valence band

EfEf

Conduction band

Valence band

P N

0 V

3

Conduction band

Valence band

EfEf

Conduction band

Valence band

P N

0.1 V

4

Conduction band

Valence band

EfEf

Conduction band

Valence band

P N

0.1 V

5

Conduction band

Valence band

EfEf

Conduction band

Valence band

P N

0.2 V

6

Conduction band

Valence band

EfEf

Conduction band

Valence band

P N

0.2 V

7

Conduction band

Valence band

Ef

Ef

Conduction band

Valence band

P N

0.3 V

8

Conduction band

Valence band

Ef

Ef

Conduction band

Valence band

P N

0.3 V

9

Conduction band

Valence band

Ef

Ef

Conduction band

Valence band

P N

0.4 V

10

Conduction band

Valence band

Ef

Ef

Conduction band

Valence band

P N

0.4 V

11

Conduction band

Valence band

Ef

Ef

Conduction band

Valence band

P N

0.5 V

12

Conduction band

Valence band

Ef

Ef

Conduction band

Valence band

P N

0.5 V

13

Conduction band

Valence band

Ef

Ef

Conduction band

Valence band

P N

0.6 V

14

Conduction band

Valence band

Ef

Ef

Conduction band

Valence band

P N

0.6 V

15

Conduction band

Valence band

Ef

Ef

Conduction band

Valence band

P N

0.7 V

16

Conduction band

Valence band

Ef

Ef

Conduction band

Valence band

P N

0.7 V

17

Conduction band

Valence band

Ef

Ef

Conduction band

Valence band

P N

0.7 V

18

Conduction band

Valence band

Ef

Ef

Conduction band

Valence band

P N

0.7 V

19

Conduction band

Valence band

Ef

Ef

Conduction band

Valence band

P N

0.7 V

20

Conduction band

Valence band

Ef

Ef

Conduction band

Valence band

P N

0.7 V

21

Conduction band

Valence band

Ef

Ef

Conduction band

Valence band

P N

0.7 V

22

Conduction band

Valence band

Ef

Ef

Conduction band

Valence band

P N

0.7 V

23

Conduction band

Valence band

Ef

Ef

Conduction band

Valence band

P N

0.7 V

24

Conduction band

Valence band

Ef

Ef

Conduction band

Valence band

P N

0.7 V

file 03809

25

Answers

Answer 1

Nothing to note here.

26

Notes

Notes 1

The purpose of this animation is to let students see the actions of charge carriers inside a semiconductor

PN junction.

27