Phtalocyanine based integrated gas sensor

  • Carmen Moldovan
  • , Lavinia Hinescu
  • , Rodica Iosub
  • , Mihail Hinescu
  • , Mihai Nisulescu
  • , Bogdan Firtat
  • , Mircea Modreanu
  • , Dan Dascalu
  • , Victor Voicu
  • , Cornel Tarabasanu

Research output: Chapter in Book/Report/Conference proceedingsChapterpeer-review

Abstract

The paper presents the layout and the technological steps for an interdigitally integrated capacitor used for gases detection. Silicon micromachining technology is applied for manufacturing the sensor substrate. The sensitive layer used is phthalocyanine (Pc) deposed by EDL (evaporated dyes layers technique). Many solutions were found as plitlialocyanine derivatives deposition technique. Considering the different sensitivities of ptitlialocyanines derivatives, we obtained different gas sensors. The .copper phthalocyanine (Cu Pc) and nickel phthalocyanine (Ni Pc) have been investigated for NOx detection. The measurement of sensors for NOx and NH3 detection will be presented as concentration versus impedance. The microsensors testing structures deposited with phthalocyanines were investigated by impedance measurements in a vacuum chamber controlled by a gas analyzer. The measurements were made at room temperature but a medium temperature is applied (<200°C) after measurement, for cleaning the material in order to reuse the sensor. The sensor is integrated, MOS compatible, cheap, easy to be used and has a low power consumption.

Original languageEnglish
Title of host publication2002 25th International Semiconductor Conference, CAS 2002 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages55-58
Number of pages4
ISBN (Electronic)0780374401
DOIs
Publication statusPublished - 2002
Externally publishedYes
Event25th International Semiconductor Conference, CAS 2002 - Sinaia, Romania
Duration: 8 Oct 200212 Oct 2002

Publication series

NameProceedings of the International Semiconductor Conference, CAS
Volume1

Conference

Conference25th International Semiconductor Conference, CAS 2002
Country/TerritoryRomania
CitySinaia
Period8/10/0212/10/02

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