Enhancement of Closed-Loop Gain of Organic Amplifiers Using Double-Gate Structures

Sunghoon Lee; Amir Reuveny; Naoji Matsuhisa; Robert Nawrocki; Tomoyuki Yokota; Takao Someya

doi:10.1109/LED.2016.2554159

Enhancement of Closed-Loop Gain of Organic Amplifiers Using Double-Gate Structures

Sunghoon Lee, Amir Reuveny, Naoji Matsuhisa, Robert Nawrocki, Tomoyuki Yokota, Takao Someya

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

We demonstrate a significant improvement in the gain of closed-loop organic amplifiers by systematically controlling the threshold voltage ( V_TH with double-gate structures. The use of an ultrathin parylene dielectric results in an operating voltage as low as 4 V with a supply voltage ( V_DD of 2 V. Double-gate structures were introduced for controlling V_TH of the transistor and the switching voltage of the inverter. The maximum dc gain of the inverter was recorded as 29.3 dB at a V_DD value of 2 V. In addition, the switching voltage of the circuits can be controlled from 0 V to V_DD without a significant performance degradation. The effects of the V_TH control on the closed-loop amplifier were systematically investigated and a significant gain improvement of up to 18.8 dB was demonstrated in the closed-loop gain by adjusting the switching voltage to half of V_DD.

Original language	English
Article number	7452547
Pages (from-to)	770-773
Number of pages	4
Journal	IEEE Electron Device Letters
Volume	37
Issue number	6
DOIs	https://doi.org/10.1109/LED.2016.2554159
Publication status	Published - 2016 Jun
Externally published	Yes

Keywords

Organic amplifiers
closed-loop amplifier
double gate structure
organic thin-film transistors
threshold voltage control

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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10.1109/LED.2016.2554159

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title = "Enhancement of Closed-Loop Gain of Organic Amplifiers Using Double-Gate Structures",

abstract = "We demonstrate a significant improvement in the gain of closed-loop organic amplifiers by systematically controlling the threshold voltage ( VTH with double-gate structures. The use of an ultrathin parylene dielectric results in an operating voltage as low as 4 V with a supply voltage ( VDD of 2 V. Double-gate structures were introduced for controlling VTH of the transistor and the switching voltage of the inverter. The maximum dc gain of the inverter was recorded as 29.3 dB at a VDD value of 2 V. In addition, the switching voltage of the circuits can be controlled from 0 V to VDD without a significant performance degradation. The effects of the VTH control on the closed-loop amplifier were systematically investigated and a significant gain improvement of up to 18.8 dB was demonstrated in the closed-loop gain by adjusting the switching voltage to half of VDD.",

keywords = "Organic amplifiers, closed-loop amplifier, double gate structure, organic thin-film transistors, threshold voltage control",

author = "Sunghoon Lee and Amir Reuveny and Naoji Matsuhisa and Robert Nawrocki and Tomoyuki Yokota and Takao Someya",

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AU - Lee, Sunghoon

AU - Reuveny, Amir

AU - Matsuhisa, Naoji

AU - Nawrocki, Robert

AU - Yokota, Tomoyuki

AU - Someya, Takao

PY - 2016/6

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N2 - We demonstrate a significant improvement in the gain of closed-loop organic amplifiers by systematically controlling the threshold voltage ( VTH with double-gate structures. The use of an ultrathin parylene dielectric results in an operating voltage as low as 4 V with a supply voltage ( VDD of 2 V. Double-gate structures were introduced for controlling VTH of the transistor and the switching voltage of the inverter. The maximum dc gain of the inverter was recorded as 29.3 dB at a VDD value of 2 V. In addition, the switching voltage of the circuits can be controlled from 0 V to VDD without a significant performance degradation. The effects of the VTH control on the closed-loop amplifier were systematically investigated and a significant gain improvement of up to 18.8 dB was demonstrated in the closed-loop gain by adjusting the switching voltage to half of VDD.

AB - We demonstrate a significant improvement in the gain of closed-loop organic amplifiers by systematically controlling the threshold voltage ( VTH with double-gate structures. The use of an ultrathin parylene dielectric results in an operating voltage as low as 4 V with a supply voltage ( VDD of 2 V. Double-gate structures were introduced for controlling VTH of the transistor and the switching voltage of the inverter. The maximum dc gain of the inverter was recorded as 29.3 dB at a VDD value of 2 V. In addition, the switching voltage of the circuits can be controlled from 0 V to VDD without a significant performance degradation. The effects of the VTH control on the closed-loop amplifier were systematically investigated and a significant gain improvement of up to 18.8 dB was demonstrated in the closed-loop gain by adjusting the switching voltage to half of VDD.

KW - Organic amplifiers

KW - closed-loop amplifier

KW - double gate structure

KW - organic thin-film transistors

KW - threshold voltage control

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Enhancement of Closed-Loop Gain of Organic Amplifiers Using Double-Gate Structures

Abstract

Keywords

ASJC Scopus subject areas

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