Extrinsic Semiconductor
Chapter Name : Semiconductor Electronics: Materials, Devices And Simple Circuits |
Sub Topic Code : 101_12_14_04_02 |
Topic Name : Extrinsic Semiconductor |
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Sub Topic Name : N-Type Semiconductor |
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Introduction
Electronic components that exploit the electronic properties of semiconductor materials, principally silicon, germanium, and gallium arsenide, as well as organic semiconductors.
Pre-Requisites:
Semiconductor
Activity:
Silicon (Si) is the most widely used material in semiconductor devices.
Real Life Question:
What is N-type Semiconductor?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| N-type semiconductors. | Semiconductors that have been doped in this way will have a surplus of electrons, and are called n-type semiconductors. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| microprocessors | All transistor types can be used as the building blocks of logic gates, which are fundamental in the design of digital circuits. Transistors act as on-off switches; in the MOSFET, for instance, the voltage applied to the gate determines whether the switch is on or off. |
Real life uses :
Building circuits.
Places to visit :
Digital circuits.
Practical examples around us
| Examples | Explainations |
|---|---|
| Solar cell | Electrical device that converts the energy of light directly into electricity by the photovoltaic effect. |
What you learn in Theory:
Electrons are the majority carriers.
What you learn in Practice:
Additional electrons which may be easily excited into the conduction band.