Publication detail

Humidity sensors based on organic semiconductor

SEVEROVÁ, K. NEŠPŮREK, S. WEITER, M.

Original Title

Humidity sensors based on organic semiconductor

English Title

Humidity sensors based on organic semiconductor

Type

conference paper

Language

en

Original Abstract

The presented work was aimed to the study of changes of electrical properties of organic materials under the influence of the humidity. The effect was investigated on selected materials, as polypyrrol and polythiophene. The special attention was paid to phtalocyanines consisted of heterocycles with different substituents. The number of hydrophilic and hydrophobic groups in their structure is relevant information from the view of their applications in electrical sensors. The hydrophilic groups can interact with molecules of water or dissociate under the influence of humidity and thus affect their electrical properties. Impedance spectroscopy and direct current measurements were used for the characterization. During the influence of the humidity the electrical parameters of the capacity, increase. The time of saturation, adsorption and desorption were investigated too, as well as the changes in electrical properties under the repetition of the humidity exposure.

English abstract

The presented work was aimed to the study of changes of electrical properties of organic materials under the influence of the humidity. The effect was investigated on selected materials, as polypyrrol and polythiophene. The special attention was paid to phtalocyanines consisted of heterocycles with different substituents. The number of hydrophilic and hydrophobic groups in their structure is relevant information from the view of their applications in electrical sensors. The hydrophilic groups can interact with molecules of water or dissociate under the influence of humidity and thus affect their electrical properties. Impedance spectroscopy and direct current measurements were used for the characterization. During the influence of the humidity the electrical parameters of the capacity, increase. The time of saturation, adsorption and desorption were investigated too, as well as the changes in electrical properties under the repetition of the humidity exposure.

Keywords

humidity, sensors, semiconductor

RIV year

2005

Released

18.09.2005

Publisher

Česká společnost chemická

Location

Brno

Pages from

s610

Pages to

s612

Pages count

3

BibTex


@inproceedings{BUT15360,
  author="Kateřina {Tmejová} and Stanislav {Nešpůrek} and Martin {Weiter}",
  title="Humidity sensors based on organic semiconductor",
  annote="The presented work was aimed to the study of changes of electrical properties of organic materials under the influence of the humidity. The effect was investigated on selected materials, as  polypyrrol and polythiophene. The special attention was paid to phtalocyanines consisted of heterocycles with different substituents. The number of hydrophilic and hydrophobic groups in their structure is relevant information from the view of their applications in electrical sensors. The hydrophilic groups can interact with molecules of water or dissociate under the influence of humidity and thus affect their electrical properties.  Impedance spectroscopy and direct current measurements were used for the characterization. During the influence of the humidity the electrical parameters of the capacity, increase. The time of saturation, adsorption and desorption were investigated too, as well as the changes in electrical properties under the repetition of the humidity exposure.",
  address="Česká společnost chemická",
  chapter="15360",
  institution="Česká společnost chemická",
  year="2005",
  month="september",
  pages="s610--s612",
  publisher="Česká společnost chemická",
  type="conference paper"
}