Lithographic patterning of conductive polyaniline

Tapio Mäkelä, S. Pienimaa, Salme Jussila, Heikki Isotalo (Corresponding Author)

Research output: Contribution to journalArticleScientificpeer-review

18 Citations (Scopus)

Abstract

Electrically conducting patterns of polyaniline are made by utilizing conventional semiconductor industry process. First polyaniline is spin- or spray-coated on an insulating substrate and has a conductivity of 1–100 S/cm. After that UV resist is spread on top of polyaniline, exposed by UV light, developed and removed. As a result one has a patterned polyaniline layer in insulating and in conducting form on top of the substrate. The conductivity remains essentially unaffected below the resist throughout the process and polyaniline turns insulating at places where the resist is removed. The difference between the electrically conducting part and the electrically insulating part is upto 1010. When the linewidth is smaller than 100 μm the square resistance increases slightly, because the deprotonating liquid penetrates somewhat below the resist. Linewidths down to 10 μm have been demonstrated. The process has been utilized in making all-polymer circuit boards having resistors and capacitors made of polyaniline.
Original languageEnglish
Pages (from-to)705-706
Number of pages2
JournalSynthetic Metals
Volume101
Issue number1-3
DOIs
Publication statusPublished - 1999
MoE publication typeA1 Journal article-refereed

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Polyaniline
conduction
conductivity
circuit boards
resistors
Linewidth
sprayers
capacitors
industries
polymers
Substrates
liquids
Ultraviolet radiation
Resistors
polyaniline
Polymers
Capacitors
Semiconductor materials
Networks (circuits)
Liquids

Cite this

Mäkelä, Tapio ; Pienimaa, S. ; Jussila, Salme ; Isotalo, Heikki. / Lithographic patterning of conductive polyaniline. In: Synthetic Metals. 1999 ; Vol. 101, No. 1-3. pp. 705-706.
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abstract = "Electrically conducting patterns of polyaniline are made by utilizing conventional semiconductor industry process. First polyaniline is spin- or spray-coated on an insulating substrate and has a conductivity of 1–100 S/cm. After that UV resist is spread on top of polyaniline, exposed by UV light, developed and removed. As a result one has a patterned polyaniline layer in insulating and in conducting form on top of the substrate. The conductivity remains essentially unaffected below the resist throughout the process and polyaniline turns insulating at places where the resist is removed. The difference between the electrically conducting part and the electrically insulating part is upto 1010. When the linewidth is smaller than 100 μm the square resistance increases slightly, because the deprotonating liquid penetrates somewhat below the resist. Linewidths down to 10 μm have been demonstrated. The process has been utilized in making all-polymer circuit boards having resistors and capacitors made of polyaniline.",
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Mäkelä, T, Pienimaa, S, Jussila, S & Isotalo, H 1999, 'Lithographic patterning of conductive polyaniline', Synthetic Metals, vol. 101, no. 1-3, pp. 705-706. https://doi.org/10.1016/S0379-6779(98)01094-7

Lithographic patterning of conductive polyaniline. / Mäkelä, Tapio; Pienimaa, S.; Jussila, Salme; Isotalo, Heikki (Corresponding Author).

In: Synthetic Metals, Vol. 101, No. 1-3, 1999, p. 705-706.

Research output: Contribution to journalArticleScientificpeer-review

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T1 - Lithographic patterning of conductive polyaniline

AU - Mäkelä, Tapio

AU - Pienimaa, S.

AU - Jussila, Salme

AU - Isotalo, Heikki

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AB - Electrically conducting patterns of polyaniline are made by utilizing conventional semiconductor industry process. First polyaniline is spin- or spray-coated on an insulating substrate and has a conductivity of 1–100 S/cm. After that UV resist is spread on top of polyaniline, exposed by UV light, developed and removed. As a result one has a patterned polyaniline layer in insulating and in conducting form on top of the substrate. The conductivity remains essentially unaffected below the resist throughout the process and polyaniline turns insulating at places where the resist is removed. The difference between the electrically conducting part and the electrically insulating part is upto 1010. When the linewidth is smaller than 100 μm the square resistance increases slightly, because the deprotonating liquid penetrates somewhat below the resist. Linewidths down to 10 μm have been demonstrated. The process has been utilized in making all-polymer circuit boards having resistors and capacitors made of polyaniline.

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