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Related Concept Videos

MOSFET Amplifiers01:17

MOSFET Amplifiers

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The MOSFET, when operating in its active region, functions as a voltage-controlled current source. In this region, the gate-to-source voltage controls the drain current. This principle underlies the operation of the transconductance MOSFET amplifier. The output current is directed through a load resistor to convert this amplifier into a voltage amplifier. The output voltage is then obtained by subtracting the voltage drop across the load resistance from the supply voltage. This process results...
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In Vitro Multiparametric Cellular Analysis by Micro Organic Charge-modulated Field-effect Transistor Arrays
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High-Frequency, Conformable Organic Amplifiers.

Amir Reuveny1, Sunghoon Lee1, Tomoyuki Yokota1

  • 1Department of Electrical Engineering, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan.

Advanced Materials (Deerfield Beach, Fla.)
|March 1, 2016
PubMed
Summary
This summary is machine-generated.

Researchers developed high-performance organic amplifiers on thin foils, achieving a 25 kHz bandwidth. These amplifiers offer the highest gain-bandwidth product (GBWP) to date for organic electronics, enabling new applications.

Keywords:
conformable electronicshigh frequencyorganic amplifiersorganic thin-film transistorsparylene

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Area of Science:

  • Organic electronics
  • Materials science
  • Semiconductor device physics

Background:

  • Organic amplifiers are crucial for flexible electronics but often suffer from limited bandwidth and gain.
  • Achieving high performance in organic devices requires advancements in materials, device architecture, and fabrication.

Purpose of the Study:

  • To fabricate large-bandwidth, low-operation-voltage, and uniform organic amplifiers.
  • To demonstrate a high gain-bandwidth product (GBWP) in organic amplifier circuits.
  • To enable high-frequency operation of organic amplifier architectures.

Main Methods:

  • Fabrication of organic field-effect transistors (OTFTs) with short channels on ultrathin foils.
  • Integration of OTFTs with aluminum oxide (AlOx) capacitors to form amplifier circuits.
  • Development of closed-loop amplifier architectures utilizing material and process advancements.

Main Results:

  • Realization of organic amplifiers with a 25 kHz bandwidth.
  • Demonstration of the highest reported gain-bandwidth product (GBWP) for organic amplifiers to date.
  • Operation of closed-loop organic amplifier architectures at frequencies of several kilohertz.
  • Achieved compact device area, smaller than 30 mm(2).

Conclusions:

  • Ultrathin foil fabrication enables high-performance organic amplifiers.
  • The developed organic amplifiers achieve state-of-the-art GBWP, paving the way for advanced organic electronic circuits.
  • Material and process innovations are key to realizing high-frequency organic amplifier systems.