Journal of Sensor Science and Technology (센서학회지)

The Korean Sensors Society (한국센서학회)
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Room Temperature Hydrogen Gas Sensor using Pd/Carbon Nanotubes Buckypaper

팔라듐/탄소나노튜브 버키페이퍼를 이용한 상온감지 수소가스 센서

  • Han, Maeum (School of Electronic and Electrical Engineering, Kyungpook National University) ;
  • Kim, Jae Keon (Department of Sensor and Display Engineering, Graduate School, Kyunpook National University) ;
  • Kim, Yeongsam (School of Electronic and Electrical Engineering, Kyungpook National University) ;
  • Jung, Dong Geon (Safety-System R&D Group, Korea Institute of Industrial Technology (KITECH)) ;
  • Kong, Seong Ho (School of Electronic and Electrical Engineering, Kyungpook National University) ;
  • Jung, Daewoong (Safety-System R&D Group, Korea Institute of Industrial Technology (KITECH))
  • 한마음 (경북대학교 전자전기공학부) ;
  • 김재건 (경북대학교센서및디스플레이공학과) ;
  • 김영삼 (경북대학교 전자전기공학부) ;
  • 정동건 (한국생산기술연구원 안전시스템연구그룹) ;
  • 공성호 (경북대학교 전자전기공학부) ;
  • 정대웅 (한국생산기술연구원 안전시스템연구그룹)
  • Received : 2020.10.20
  • Accepted : 2020.11.25
  • Published : 2020.11.30
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Abstract

In this paper, we report the sensing performance of H2 gas sensors composed of Pd/carbon nanotube (CNT) buckypaper at room temperature. The CNT buckypaper was made using a simple filtration process and subsequently deposited with Pd as the sensing material. The sensitivity of the sensor increased with respect to the gas concentration. To investigate the effect of Pd thickness, Pd layers of different thickness were deposited on the buckypaper, and the response of the sensor was evaluated. The proposed sensor exhibits excellent sensing properties with optimized Pd thickness at room temperature (25℃). Pd nanoparticles significantly impact the sensitivity and selectivity of the sensor because of the spillover effect. In addition, the sensor is highly suitable for bendable and wearable devices owing to its structural flexibility.

Keywords

References

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