What is the semiconductor material used to make transistors?

Most transistors are made from very pure silicon, and some from germanium, but certain other semiconductor materials are sometimes used. A transistor may have only one kind of charge carrier, in a field-effect transistor, or may have two kinds of charge carriers in bipolar junction transistor devices.

What is an organic semiconductor material?

Organic semiconductors are solids whose building blocks are pi-bonded molecules or polymers made up by carbon and hydrogen atoms and – at times – heteroatoms such as nitrogen, sulfur and oxygen. They exist in form of molecular crystals or amorphous thin films.

What are the examples of organic semiconductors?

Organic light-emitting diodes (OLEDs), organic solar cells (OSCs), and organic field-effect transistors (OFETs) are a few examples of organic semiconductors.

What is organic thin-film transistors?

Organic thin-film transistor (OTFT) technology involves the use of organic semiconducting compounds in electronic components, notably computer displays. Such displays are bright, the colors are vivid, they provide fast response times, and they are easy to read in most ambient lighting environments.

Is the most commonly used semiconductor for transistor?

Silicon
Detailed Solution. Silicon is used as the most common semiconductor because: Its high-temperature stability is more. Reverse minority current is less.

Why are semiconductors used in transistors?

Putting semiconductors to work Transistors, and many other electronic devices, are made of semiconductors — materials that conduct electricity only weakly under certain conditions. Radar technology, developed during World War II, used tow semiconductors, germanium and silicon, to detect short-wave radio signals.

Which of the following is an organic semiconductor?

The organic semiconductors that are used are pentacene, poly (3-hexylthiophene) (P3HT), poly (3-alkylthiophene) (P3AT), and poly (3-octylthiophene) (P3OT), which can be deposited by vacuum evaporation and solution processing techniques (Shekar et al., 2004).

Which of the following is an organic compound semiconductor?

Pentacene and anthracene are two organic compound semiconductors.

How do organic transistors work?

The organic field-effect transistor includes an electrically conducting polymer for forming source/drain mounted on a polymeric layer formed from polyester, an insulating polymer formed from phenylsilane for fabricating the gate dielectric, a semiconducting polymer, such as conducting polymers e.g., polythiophene, and …

How does organic field effect transistor work?

Field-effect transistors usually operate as a capacitor. They are composed of two plates. One plate works as a conducting channel between two ohmic contacts, which are called the source and the drain contacts. The other plate works to control the charge induced into the channel, and it is called the gate.

What are the 2 most used semiconductors?

Germanium (Ge) and Silicon (Si) are the most common type of intrinsic semiconductor elements.

Which semiconductor material is most used and why?

Silicon is the most widely used type of semiconductor material. Its major advantage is that it is easy to fabricate and provides good general electrical and mechanical properties.

What is semiconductor device and material?

A semiconductor device is an electronic component that relies on the electronic properties of a semiconductor material (primarily silicon, germanium, and gallium arsenide, as well as organic semiconductors) for its function. Its conductivity lies between conductors and insulators.

Why is silicon a good semiconductor?

Silicon elements are able to bind atoms tightly and in complex arrangements. The abundance of silicon makes it inexpensive and easy to acquire. This is the biggest reason why silicon is the most widely used semiconductor material.

What are the advantages of an organic semiconductor over a silicon semiconductor?

Organic electronics, such as displays, photovoltaics and electronics circuits and components, offer several advantages over the conventional inorganic-based electronics because they are inexpensive, flexible, unbreakable, optically transparent, lightweight and have low power consumption.

How many organic semiconductors are there?

Organic semiconductors can be broadly divided into two main categories [3], i.e., polymers and small-molecule materials. There are notable differences from a chemical point of view between these two categories, which obviously affect their technological performance.

What are organic semiconductors used for?

The potential applications of these materials include organic light-emitting diodes (OLEDs) for displays and lighting applications, electronic paper, thin film batteries, supercapacitors, organic photovoltaics, sensors, and biosensors.

What are the semiconductors for organic transistors?

Semiconductors for organic transistors. Organic molecules/polymers with a π-conjugated (hetero)aromatic backbone are capable of transporting charge and interact efficiently with light. Therefore, these systems can act as semiconductors in opto-electronic devices similar to inorganic materials.

What are the applications of organic solids in semiconductors?

The discovery by Kallman and Pope paved the way for applying organic solids as active elements in semiconducting electronic devices, such as organic light-emitting diodes (OLEDs) that rely on the recombination of electrons and hole injected from “ohmic” electrodes, i.e. electrodes with unlimited supply of charge carriers.

How do organic semiconductors conduct electricity?

Organic semiconductors are made up of polymers or π-bonded molecules and can conduct when charge carriers are injected into them. It is the conjugated system of π bonds, the backbone of the polymeric chain; that mediates in the charge transfer through the polymer chain.

When was the first organic semiconductor device made?

In 1973 Dr. John McGinness produced the first device incorporating an organic semiconductor. This occurred roughly eight years before the next such device was created. The ” melanin (polyacetylenes) bistable switch” currently is part of the chips collection of the Smithsonian Institution. An organic polymer voltage-controlled switch from 1974.