Conducting-Polymer Bolometers for Low-Cost IR-Detection Systems

Anna Håkansson, Maryam Shahi, Joseph W. Brill, Simone Fabiano, Xavier Crispin

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

Semiconducting polymers are promising materials for manufacturing optoelectronic devices, such as large-area solar cells or small light-emitting diodes, through the use of printing technologies. In their oxidized form, π-conjugated polymers become good electrical conductors and their optical absorption shifts to the infrared region. It is demonstrated that conducting polymers can be integrated in bolometers for IR detection. A bolometer is a thermally isolated thin device that absorbs IR radiation and translates a temperature change into a change in electrical resistance. While commercial bolometers are usually made of complex architectures comprising several materials (that is, an IR absorbing layer, a conducting layer, and a thermally insulating layer), the first polymer bolometer is demonstrated with a freestanding layer of poly(3,4-ethylene-dioxythiophene) having high IR absorption, low thermal conductivity, and good thermistor action in one single layer. The solution processability of conducting polymers, their compatibility with high-resolution printing technologies, and their unique combination of optoelectronic properties can lead to a breakthrough for low-cost uncooled IR cameras, which are in high demand for security and safety applications.

Original languageEnglish
Article number1800975
JournalAdvanced Electronic Materials
Volume5
Issue number6
DOIs
StatePublished - Jun 2019

Bibliographical note

Funding Information:
The authors gratefully acknowledge financial support from the Knut and Alice Wallenberg Foundation (Tail of the Sun), the Swedish Energy Agency, the Swedish Research Council, ÅForsk, the Swedish Government Strategic Research Area in Materials Science on Functional Materials at Linköping University (Faculty Grant SFO-Mat-LiU No. 2009 00971), and U.S. National Science Foundation, grant number DMR-1262261.

Funding Information:
The authors gratefully acknowledge financial support from the Knut and Alice Wallenberg Foundation (Tail of the Sun), the Swedish Energy Agency, the Swedish Research Council, ?Forsk, the Swedish Government Strategic Research Area in Materials Science on Functional Materials at Link?ping University (Faculty Grant SFO-Mat-LiU No. 2009 00971), and U.S. National Science Foundation, grant number DMR-1262261.

Publisher Copyright:
© 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Keywords

  • IR detection
  • PEDOT:PSS
  • conducting polymers
  • low-cost thermal imaging
  • organic bolometers

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

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