Home Semiconductor Definition – Properties, Types and More

Semiconductor Definition – Properties, Types and More


Definition of Semiconductor –

A semiconductor can be defined as a material that has conductivity lying between that of a metal and an insulator. An important property of semiconductor is its energy band that is, in the range of forbidden energies within the electronic structure of semiconductor material.

Semiconductors typically have bandgaps ranging between 1 and 4 eV, while insulators have larger band gaps, often greater than 5 eV.

Semiconducting materials are very sensitive to impurities in the crystal lattice as these can have a drastic effect on the number of mobile charge carriers present. The controlled addition of these impurities is known as doping and allows the tuning of the electronic properties of semiconductor material, and doping an important requirement for technological applications.

Properties of Semiconductors

Semiconductor Definition - Properties, Types and More

It can conduct electricity under preferable conditions or circumstances. This unique property makes it a superb material to conduct electricity in a controlled manner as needed.

Unlike conductors, the charge a carrier in semiconductors excites on the application of external energy called thermal agitation. It causes a certain number of excited electrons to cross the energy gap and reached the conduction band, leaving an equal amount of unoccupied energy states, i.e. holes in the valance band.

• Resistivity: 10-5 to 106 Ωm

• Conductivity: 105 to 10-6 mho/m

• Temperature coefficient of resistance: Negative

• Current Flow: Due to the participation of electrons and holes

Types of Semiconductors

Semiconductors can be classified as:

• Intrinsic Semiconductor
• Extrinsic Semiconductor

Intrinsic Semiconductor

Semiconductor Definition - Properties, Types and More

In the intrinsic type of semiconductor material is made up of only a single type of element.

Ex; Germanium, Silicon

Extrinsic Semiconductor

Extrinsic Semiconductor

The conductivity of semiconductors can be altered by adding a small number of suitable atoms called impurity atom. The process of adding impurity atoms to the pure semiconductor is called doping. Usually, only 1 atom in 107 is replaced by a dopant atom in the doped semiconductor.

An extrinsic semiconductor can be further classified into:

• N-type Semiconductor
• P-type Semiconductor



This Corporation supplies analog, standard logic, and discrete semiconductors for data and power management. The Company offers products include integrated circuits and analog ICs. ON Semiconductor also offers discrete semiconductors during a sort of surface mount and standard packages. the corporate may be a leading supplier of semiconductor-based solutions,

Services Provided

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1.Amplifiers and comparators, 2.audio video ASSP, 3.Connectivity,4.Sensors, 5.Isolation and Protection devices, 6.Power management, 7.Power modules, 8.Interfaces, 9.Clock and Timing, 10.Discrete and Drivers, 11.Memory, 12.Optoelectronics, 13.Microcontrollers, 14.Standard Logic

Cypress semiconductors

Cypress semiconductors deal in advanced system-level and provide embedded solutions. It is a faster-growing company that targets the market growing faster than the other broader semiconductor industry. It includes automotive, industrial and consumer electronics markets. It deals in world-class, secure wireless technology—along with its MCUs, memories, analogICs, and USB controllers—give its an unparalleled competitive advantage within the web of Things, and a hop-on emerging markets, including connected appliances and autonomous cars.

Product and Services

Wireless services include

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Standard PMICs

LED Lighting Driver ICs

Touch Sensing

CapSense Controllers

TrueTouch Touchscreen Controllers

Automotive TrueTouch


NOR Flash

NAND Flash

Serial and Parallel F-RAM Memories

Excelon F-RAM


Asynchronous SRAM

Synchronous SRAM

NXP Semiconductors

NXP is driving innovation within the automotive, industrial &IoT, mobile, and communication infrastructure markets. NXP Semiconductor enables secure connections for a better world, advancing solutions that make lives easier, better, and safer. because of the world leader in secure connectivity solutions for embedded applications,

Product and services

Automotive Products

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• AM / FM radio and audio

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• USB Interfaces

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Peripherals and Logic
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Voltage Level Translators
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Security and Authentication
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