Outstanding Performance with New Organic Transistor

Exceptional Performance with New Organic Transistor
A new organic anti-ambipolar transistor has been developed that can perform any of the five logic gate operations by adjusting the input voltages to its double gates. It can be used to develop electrically reconfigurable logic circuits that could be key in the development of high-performance mobile devices.(ref: scitechdaily)

It will be possible to build multiple logic circuits using only a single transistor. The National Institute of Materials Science (NIMS) and Tokyo University of Science have succeeded in developing an organic anti-ambipolar transistor. They can perform any of the five logic gate operations (AND, OR, NAND, NOR, or XOR) by adjusting the input voltages to their dual gates.

This lightweight transistor with multiple logic gate capability is electrically reconfigurable and can be used to develop logic circuits.

It could potentially play a key role in the development of high-performance mobile devices. As the internet of things (IoT) becomes a reality, the volume of data that needs to be processed is expected to skyrocket. This will require lightweight, high-performance, mobile data processing devices. Organic transistor integrated circuits are a potentially game-changing technology in the development of such devices.

Let's Get to Know the Transistor

A transistor is a semiconductor device used to amplify or switch electrical signals and power. The transistor is one of the basic building blocks of modern electronics. It usually consists of semiconductor material with at least three terminals for connection to an electronic circuit. A voltage or current applied to one pair of terminals of the transistor controls the current through another pair of terminals. A transistor can amplify a signal because the controlled (output) power can be higher than the control (input) power. Some transistors are individually packaged, but most are embedded in integrated circuits.

Austro-Hungarian physicist Julius Edgar Lilienfeld proposed the field-effect transistor concept in 1926, but at that time it was not possible to build a truly working device.

The first working device to be built was a point-contact transistor, invented in 1947 by American physicists John Bardeen and Walter Brattain while working at Bell Laboratories under William Shockley. The three shared the 1956 Nobel Prize in Physics for their achievements. The most widely used type of transistor is the metal-oxide-semiconductor field-effect transistor (MOSFET), which was invented at Bell Laboratories in 1959 by Mohamed Atalla and Dawon Kahng.

Transistors revolutionized electronics and paved the way for smaller and cheaper radios, calculators, and computers, among other things.

Most transistors are made from very pure silicon and some from germanium, but some other semiconductor materials are sometimes used. A transistor can have only one type of charge carrier in a field-effect transistor, or it can have two types of charge carriers in bipolar junction transistor devices. Compared to the vacuum tube, transistors are generally smaller and require less power to operate. Some vacuum tubes have advantages over transistors at very high operating frequencies or high operating voltages. Many types of transistors are made to standardized specifications by multiple manufacturers. (Ref: Wikipedia)

If we go back to our article;

However, the integration density of these circuits has remained very low due to incompatibility with existing microfabrication technologies.

To address this issue, this research group has undertaken studies of reducing the drain current when the gate voltage exceeds a certain threshold. Their design was an organic double-gate anti-ambipolar transistor capable of performing two-input logic gate operations.

When input voltages are applied to the upper and lower gates of the transistor, it produces an output signal (i.e. a drain current).

This transistor has demonstrated its ability to act as five different types of two-input logic gates at room temperature when input voltages are adjusted.

Current integrated circuit technology requires four transistors to form a NAND circuit and 12 transistors to form an XOR circuit.

In contrast, only one of these newly developed transistors is needed to build these circuits.

In addition, this transistor can be used to significantly increase the integration density of organic circuits, which is a major challenge in organic electronics.

In future research, the group plans to develop electrically reconfigurable integrated circuits using this new transistor.

source: scitechdaily

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