Ultrathin lateral unidirectional bipolar-type insulated-gate transistor as pH sensor

  • Qinghua Han
  • , Anran Gao
  • , Keyvan Narimani
  • , Yuelin Wang
  • , Tie Li
  • , Siegfried Mantl
  • , Qing Tai Zhao

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Here, the utilizing of lateral unidirectional bipolar-type insulated-gate transistors (Lubistors) for pH detection was demonstrated for the first time. The high on current and ambipolarity of Lubistors are favorable properties for reliable sensing application. The ultrathin Lubistors were fabricated on 20-nm-thick SOI substrates in planar geometry. The triode-like current-voltage characteristic and excellent gate modulation property for Lubistor were demonstrated. Without any surface modification, this Lubistor based pH sensor was capable of detecting the change of hydrogen ion concentration by the corresponding change in anode current. The anode current revealed nonlinear pH-dependence and complementary change at different working regions. The Lubistor sensor showed stable, reversible and reproducible pH sensing performance. The proposed Lubistor based sensor holds great potential for high reliable biological species detection.

Original languageEnglish
Title of host publication2017 47th European Solid-State Device Research Conference, ESSDERC 2017
PublisherEditions Frontieres
Pages268-271
Number of pages4
ISBN (Electronic)9781509059782
DOIs
StatePublished - 12 Oct 2017
Externally publishedYes
Event47th European Solid-State Device Research Conference, ESSDERC 2017 - Leuven, Belgium
Duration: 11 Sep 201714 Sep 2017

Publication series

NameEuropean Solid-State Device Research Conference
ISSN (Print)1930-8876

Conference

Conference47th European Solid-State Device Research Conference, ESSDERC 2017
Country/TerritoryBelgium
CityLeuven
Period11/09/1714/09/17

Keywords

  • Lubistor
  • hydrogen ion
  • pH sensor
  • reliable

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