Intrinsic Semiconductor
Chapter Name : Semiconductor Electronics: Materials, Devices And Simple Circuits |
Sub Topic Code : 101_12_14_03_01 |
Topic Name : Intrinsic Semiconductor |
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Sub Topic Name : Intrinsic 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 intrinsic Semiconductor?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Intrinsic Semiconductor | At finite temperatures the only charge carriers are the electrons in the conduction band and the holes in the valence band that arise as a result of the thermal excitation of electrons to the conduction band. |
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:
Semiconductor materials are so useful because their behavior can be easily manipulated by the addition of impurities.
What you learn in Practice:
There are equal numbers of electrons and holes.