Organic Electrochemical Transistor

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Overview:

Researchers at Northwestern University recently outlined a new strategy to fabricate high-density and mechanically flexible Organic Electrochemical Transistor (OECTs).

About Organic Electrochemical Transistor

  • It is an emerging class of transistor based on organic superconducting materials known for their ability to modulate electrical current in response to small changes in the voltage applied to their gate electrode.
  • It is a device capable of simultaneously controlling the flow of electronic and ionic currents.
  • Advantages: They have various notable advantages, including promising amplification and sensing capabilities, low power consumption, low driving voltages and a versatile structure.
  • Applications: They can be used to create biosensors, wearable devices, and neuromorphic systems.

What is a transistor?

  • It is a semiconductor device for amplifying, controlling, and generating electrical signals.
  • It is the active components of integrated circuits, or “microchips,” which often contain billions of these minuscule devices etched into their shiny surfaces.
  • There are three terminals for transistor as mentioned below:
    • Base: To activate the transistor
    • Collector: It is a positive lead of transistor
    • Emitter: It is a negative lead of transistor
  • Types of Transistors
    • Bipolar Junction Transistor: It is considered one of the most common types of transistors and it can be either NPN or PNP. 
    • It can able to amplify the electrical signal by joining all three layers into one. In current flow, there are two types of electrical charges involved i.e., electrons and holes.
    • Field effect transistor: It is a three-terminal semiconductor device. Its operation is based on a controlled input voltage.
    • It uses an electric field to control the field of electric current in a semiconductor.
    • They are also known as unipolar transistors since they contain single-carrier-type operations.

Q1: What is an Integrated Circuit?

An integrated circuit (IC) — commonly called a chip — is made out of a semiconductor material called silicon, in which small electronic components called transistors are formed within the silicon and then wired together with interconnects layered on top of the silicon surface.

Source: A new strategy for fabricating high-density vertical organic electrochemical transistor arrays