Detail publikace

Dependence of PEDOT:PSS Thickness on Transconductance of OECT

MARKOVÁ, A. VALA, M. STŘÍTESKÝ, S. WEITER, M.

Originální název

Dependence of PEDOT:PSS Thickness on Transconductance of OECT

Anglický název

Dependence of PEDOT:PSS Thickness on Transconductance of OECT

Jazyk

en

Originální abstrakt

The organic electrochemical transistor (OECT) plays an important role in modern bioelectronics. Its use in study of living cells physiology keeps this device very attractive and at the forefront of various bioelectronic devices. In a case of some bioelectronic applications, namely in sensing, the high gain of the OECT is needed. To evaluate the OECT gain the transfer characteristics are measured and the value of transconductance is calculated. It is known that the transconductance is strongly dependent on electrical resistivity and the thickness of the organic semiconductor film, as well as on the ratio of the width to channel length. To develop the OECT with high transconductance, an optimal thickness of the organic semiconductor and the length of the channel must be found. In this study, the effect of the electrical resistance driven by channel length and thickness of poly(3,4-ethylene dioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) film on the resulting transconductance of planar OECT was studied. It was found that the electrical resistance is decreasing with the increasing film thickness and simultaneously, the transconductance is increasing as expected. When the channel length is increased the transconductance decrease. Based on these findings, it was possible to develop the OECT with high transconductance and thus high sensitivity for e.g. living cells physiology studies.

Anglický abstrakt

The organic electrochemical transistor (OECT) plays an important role in modern bioelectronics. Its use in study of living cells physiology keeps this device very attractive and at the forefront of various bioelectronic devices. In a case of some bioelectronic applications, namely in sensing, the high gain of the OECT is needed. To evaluate the OECT gain the transfer characteristics are measured and the value of transconductance is calculated. It is known that the transconductance is strongly dependent on electrical resistivity and the thickness of the organic semiconductor film, as well as on the ratio of the width to channel length. To develop the OECT with high transconductance, an optimal thickness of the organic semiconductor and the length of the channel must be found. In this study, the effect of the electrical resistance driven by channel length and thickness of poly(3,4-ethylene dioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) film on the resulting transconductance of planar OECT was studied. It was found that the electrical resistance is decreasing with the increasing film thickness and simultaneously, the transconductance is increasing as expected. When the channel length is increased the transconductance decrease. Based on these findings, it was possible to develop the OECT with high transconductance and thus high sensitivity for e.g. living cells physiology studies.

Dokumenty

BibTex


@misc{BUT165735,
  author="Aneta {Marková} and Martin {Vala} and Stanislav {Stříteský} and Martin {Weiter}",
  title="Dependence of PEDOT:PSS Thickness on Transconductance of OECT",
  annote="The organic electrochemical transistor (OECT) plays an important role in modern bioelectronics. Its use in study of living cells physiology keeps this device very attractive and at the forefront of various bioelectronic devices. In a case of some bioelectronic applications, namely in sensing, the high gain of the OECT is needed. To evaluate the OECT gain the transfer characteristics are measured and the value of transconductance is calculated. It is known that the transconductance is strongly dependent on electrical resistivity and the thickness of the organic semiconductor film, as well as on the ratio of the width to channel length. To develop the OECT with high transconductance, an optimal thickness of the organic semiconductor and the length of the channel must be found. In this study, the effect of the electrical resistance driven by channel length and thickness of poly(3,4-ethylene dioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) film on the resulting transconductance of planar OECT was studied. It was found that the electrical resistance is decreasing with the increasing film thickness and simultaneously, the transconductance is increasing as expected. When the channel length is increased the transconductance decrease. Based on these findings, it was possible to develop the OECT with high transconductance and thus high sensitivity for e.g. living cells physiology studies.",
  address="Vysoké učení technické v Brně, Fakulta chemická",
  booktitle="Sborník abstraktů",
  chapter="165735",
  howpublished="print",
  institution="Vysoké učení technické v Brně, Fakulta chemická",
  year="2019",
  month="november",
  pages="81",
  publisher="Vysoké učení technické v Brně, Fakulta chemická",
  type="abstract"
}