P1.5.3 Gas Sensing Characteristics of Low-powered Dual MOSFET Hydrogen Sensors

Kim, Bumjoon J.; Yoon, Jin-Ho; Kim, Jung-Sik

doi:10.5162/imcs2012/p1.5.3

Cited by 2 publications

(2 citation statements)

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“…9,10 Various research studies have reported the use of catalytic metals such as palladium (Pd), Platinum (Pt), Gold (Au), Silver (Ag), and so forth, as a potential gate metal element to detect hydrogen gas. [9][10][11][12][13] Further, due to high-adsorption sites as well as permeability, Pd is most widely used catalytic element for hydrogen gas detection. In 1975, Lundstrom demonstrated the first ever hydrogen gas sensor using Pd as a gate metal.…”

Section: Introductionmentioning

confidence: 99%

“…Apart from this, lower cost, low‐power operation, and improved energy efficiency along with high sensitivity are added advantages 9,10 . Various research studies have reported the use of catalytic metals such as palladium (Pd), Platinum (Pt), Gold (Au), Silver (Ag), and so forth, as a potential gate metal element to detect hydrogen gas 9–13 . Further, due to high‐adsorption sites as well as permeability, Pd is most widely used catalytic element for hydrogen gas detection.…”

Section: Introductionmentioning

confidence: 99%

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Investigation of palladium gated polarity controllable FET as a highly sensitive and robust hydrogen gas sensor

Pandey

Kaur

2023

Int J Numerical Modelling

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The paper investigates the design and performance of a novel palladium gated‐polarity controllable Field Effect Transistor (FET) (PC‐FET) for hydrogen gas sensing applications. In the present work, catalytic sensing metal gate (palladium) is chosen as control gate (CG) and hydrogen gas molecules are exposed on the region controlled by CG. A compact analytical model has been derived for PC‐FET based sensor and the performance of the proposed gas sensor has been examined in terms of energy band profile, surface potential, electric field, transfer characteristics and transconductance and the derived analytical results are verified using TCAD simulated results. Furthermore, the sensitivity metrics such as threshold voltage sensitivity, drain current sensitivity, transconductance sensitivity and ION/OFF sensitivity have also been extensively investigated for both modes of proposed sensor for a wide range of pressure that is, 10−14–10−8 Torr.

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