Difference between revisions of "PhET-Simulations-for-Physics/C3/Semiconductors/English"
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Revision as of 08:57, 17 December 2022
Semiconductors
Author: Vidhi Thakur
Keywords: PhET simulation, dopants, diode, valence band, conduction band, donor, acceptor, depletion region video tutorial.
Visual Cue | Narration |
Slide Number 1
Title Slide |
Welcome to this spoken tutorial on Semiconductors. |
Slide Number 2
Learning Objectives |
In this tutorial, we will learn,
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Slide Number 3
System Requirement |
Here I am using
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Slide Number 4
Pre-requisites https://spoken-tutorial.org |
To follow this tutorial the learner should be familiar with topics in high school science.
Please use the link below to access the tutorials on PhET simulations. |
Slide Number 5
Link for PhET simulation point to |
Please use the given link to download the PhET simulation.
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Point to the file in the Downloads folder. | I have downloaded the Semiconductors simulation to my Downloads folder. |
Double click the file to open | To open the simulation double click on the file. |
Cursor on the interface. | This is the interface of Semiconductors simulation. |
Cursor on main panel.
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The main panel consists of a circuit.
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Cursor on dopants. | Point to the P Type and N Type dopants at the bottom.
A dopant is an impurity added to semiconductors to modify their conductivity.
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Cursor on dopant.
Cursor on valence band. |
An electrode is connected to each dopant.
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Cursor on conduction band. |
The high energy band is the conduction band.
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Cursor on right panel.
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On the right panel the Segments section is present.
It consists of one and two as options.
The two(2) Segments provide space for two segments.
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Click on segment one.
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Let us first select segment one(1).
Here only one segment is present.
The higher energy band is the conduction band with high energy.
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Drag and add P-type in space in the bottom of the circuit.
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Let’s drag and place a P-type dopant to fill in the purple space in the circuit.
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Click on down arrow till -4V. | Now let us decrease the voltage to -4 volts.
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Click on Clear Dopants.
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Let us clear dopants now.
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Click the down arrow till -4V.
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Now let us change the voltage to -4 , that is. change the terminal of the battery.
in the conduction band.
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Click on two segment.
Click the arrow till 4V.
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Now let us select Segments two(2).
This is because p-type dopant is an acceptor.
So, there is no flow of current in the circuit. |
Drag and add an N-type dopant in the right space.
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Let us drag and add an N-type dopant in the right space.
Negative terminal is connected to the P-type.
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Cursor on valence band and conduction band. | Empty space is filled by electrons in the P-type dopant.
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Click on down arrow till -4V.
Cursor on battery. |
Now let us slowly change the voltage to -4 Volts.
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Click on Clear Dopants.
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Now let”s clear the dopants.
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Drag and add a P-type dopant in the right space.
Cursor on battery
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Let us drag and add P-type dopant in the right segment.
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Click on down arrow till -4V.
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I will now change the voltage to -4 Volts.
Only holes are left.
So, we see no flow of current.
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Slide Number 6
Summary |
With this we come to the end of this tutorial.
Let's summarise.
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Slide Number 7
Assignment |
As an assignment, Make various combinations of dopants at different voltages and record the observations. |
Slide: 8
About Spoken Tutorial Project |
The video at the following link summarizes the Spoken Tutorial project.
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Slide: 9
Spoken tutorial workshops |
We conduct workshops using spoken tutorials and give certificates.
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Slide: 10
Answers for THIS Spoken Tutorial Do you have questions in THIS Spoken Tutorial? Please visit this site Choose the minute and second where you have the question. Explain your question briefly The spoken tutorial project will ensure answer. You will have to register on this website to ask questions. |
* Please post your timed queries in this forum.
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Slide: 11
Forum |
The Spoken Tutorial forum is for specific questions on this tutorial.
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Slide: 12
Acknowledgement |
Spoken Tutorial project is funded by the Ministry of Education (MoE), Govt. of India |
This is Vidhi Thakur, a FOSSEE
Thank you for joining. |