Photo-assisted recovery in ammonia sensor based on organic vertical diode

Yu Ting Lin, Shang Yu Yu, Hsiao Wen Zan, Ping Hung Yeh, Chia-Jung Lu, Hsin Fei Meng, Chih Wei Luo, Olivier Soppera

Research output: Contribution to journalArticle

Abstract

In this article, a photo-assisted gas sensor was provided to solve the slow recovering issue of the organic gas sensor. The proposed organic gas sensor can detect ammonia in parts-per-billion regime in 30 s and can be multiple uses, but the long recovery time about 5 min places difficulty to realize rapidly multiple-time sensing. Therefore, we used the photo-absorption ability in the organic semiconductor layer to generate the photocurrent and hence to compensate the current drop due to the ammonia absorption. The recovery time was significantly reduced to be only 1 min. The specific wavelength was also found to match the absorption spectrum in different organic sensing materials. As a comparison, the quartz crystal microbalance (QCM) was used to clarify the gas absorption and desorption mechanism. It is believed that this photo-assisted gas detection could be a general method to solve the slow recovery in organic-based gas sensors.

Original languageEnglish
Pages (from-to)272-278
Number of pages7
JournalOrganic Electronics
Volume67
DOIs
Publication statusPublished - 2019 Apr 1

Fingerprint

Chemical sensors
Ammonia
ammonia
Diodes
recovery
diodes
Recovery
sensors
Sensors
gases
Gas absorption
Semiconducting organic compounds
Quartz crystal microbalances
Photocurrents
Absorption spectra
Desorption
Gases
organic semiconductors
photoabsorption
quartz crystals

Keywords

  • Ammonia
  • Fast recovery
  • Light emitting diode
  • Light-assisted recovery
  • Organic gas sensor

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry
  • Electrical and Electronic Engineering

Cite this

Lin, Y. T., Yu, S. Y., Zan, H. W., Yeh, P. H., Lu, C-J., Meng, H. F., ... Soppera, O. (2019). Photo-assisted recovery in ammonia sensor based on organic vertical diode. Organic Electronics, 67, 272-278. https://doi.org/10.1016/j.orgel.2019.01.036

Photo-assisted recovery in ammonia sensor based on organic vertical diode. / Lin, Yu Ting; Yu, Shang Yu; Zan, Hsiao Wen; Yeh, Ping Hung; Lu, Chia-Jung; Meng, Hsin Fei; Luo, Chih Wei; Soppera, Olivier.

In: Organic Electronics, Vol. 67, 01.04.2019, p. 272-278.

Research output: Contribution to journalArticle

Lin, YT, Yu, SY, Zan, HW, Yeh, PH, Lu, C-J, Meng, HF, Luo, CW & Soppera, O 2019, 'Photo-assisted recovery in ammonia sensor based on organic vertical diode', Organic Electronics, vol. 67, pp. 272-278. https://doi.org/10.1016/j.orgel.2019.01.036
Lin, Yu Ting ; Yu, Shang Yu ; Zan, Hsiao Wen ; Yeh, Ping Hung ; Lu, Chia-Jung ; Meng, Hsin Fei ; Luo, Chih Wei ; Soppera, Olivier. / Photo-assisted recovery in ammonia sensor based on organic vertical diode. In: Organic Electronics. 2019 ; Vol. 67. pp. 272-278.
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