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Conjugated Polymer Materials for Emerging Electronic Device Applications

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Polymer Applications".

Deadline for manuscript submissions: closed (20 August 2022) | Viewed by 3216

Special Issue Editor

Department of Nanotechnology Engineering and Department of Smart Green Technology Engineering College of Engineering, Pukyong National University, Busan 48513, Korea
Interests: organic semiconductor; conjugated polymers; organic electronics; printed electronics; device physics; charge transport physics

Special Issue Information

Dear Colleagues,

In 1977, Shirakawa, MacDiarmid, and Heeger were the first to report a conducting polymer, namely polyacetylene doped with halogen ions or arsenic pentafluoride, for which they won the Nobel Prize in Chemistry in 2000. Since then, π-conjugated polymers have attracted extensive interest for applications in noble optoelectronic devices owing to their mechanical flexibility, optoelectronic tunability, and potentially low-cost manufacturing using graphic arts printing techniques. Recently, a polymer semiconductor-based light-emitting diode (PLED) produced using inkjet printing came close to commercialization. Polymer semiconductor-based organic field-effect transistors (OFETs) and their applications in various electronic sensors, as well as polymer-based energy harvesting devices, such as organic photovoltaic cells (OPVs) and thermoelectric devices, are emerging as next-generation electronic devices.

This Special Issue is focused on the optoelectronic applications of π-conjugated molecule-based semiconductor materials. Topics may cover the design and synthesis of π-conjugated molecules for emerging optoelectronic applications, π-conjugated organic semiconductor-based electronic devices including OLED, OPV, and OFETs, and their optimized fabrication process. The issue may also address the structure–properties relationship, electronic structures, charge generation and annihilation phenomena, or charge-transporting mechanisms in π-conjugated molecules, which will help to compile the current state of the art and to highlight their range of applications. Both original contributions and reviews are welcome.

Dr. Jiyoul Lee
Guest Editor

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Keywords

  • conjugated molecules
  • conjugated polymers
  • liquid crystalline polymers
  • donor–acceptor type copolymers
  • organic semiconductors
  • polymer semiconductors
  • organic light-emitting diodes (OLED)
  • organic photovoltaic cell (OPV)
  • organic field-effect transistors (OFET) or organic thin-film transistors (OTFT)
  • organic electronics
  • polymer electronics
  • flexible electronics
  • solution process
  • printed electronics

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Published Papers (1 paper)

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Research

10 pages, 2601 KiB  
Article
Enhanced Performance of Cyclopentadithiophene-Based Donor-Acceptor-Type Semiconducting Copolymer Transistors Obtained by a Wire Bar-Coating Method
by Doyeon Kim, Minho Yoon and Jiyoul Lee
Polymers 2022, 14(1), 2; https://doi.org/10.3390/polym14010002 - 21 Dec 2021
Cited by 5 | Viewed by 2723
Abstract
Herein, we report the fabrications of high-performance polymer field-effect transistors (PFETs) with wire bar-coated semiconducting polymer film as an active layer. For an active semiconducting material of the PFETs, we employed cyclopentadithiophene-alt-benzothiadiazole (CDT-BTZ) that is a D-A-type-conjugated copolymer consisting of a [...] Read more.
Herein, we report the fabrications of high-performance polymer field-effect transistors (PFETs) with wire bar-coated semiconducting polymer film as an active layer. For an active semiconducting material of the PFETs, we employed cyclopentadithiophene-alt-benzothiadiazole (CDT-BTZ) that is a D-A-type-conjugated copolymer consisting of a repeated electron-donating unit and an electron-accepting unit, and the other two CDT-based D-A-type copolymer analogues are cyclopentadithiophene-alt-fluorinated-benzothiadiazole (CDT-FBTZ) and cyclopentadithiophene-alt-thiadiazolopyridine (CDT-PTZ). The linear field-effect mobility values obtained from the transfer curve of the PFETs fabricated with the spin-coating were 0.04 cm2/Vs, 0.16 cm2/Vs, and 0.31 cm2/Vs, for CDT-BTZ, CDT-FBTZ, and CDT-PTZ, respectively, while the mobility values measured from the PFETs with the wire bar-coated CDT-BTZ film, CDT-FBTZ film, and CDT-PTZ film were 0.16 cm2/Vs, 0.28 cm2/Vs, and 0.95 cm2/Vs, respectively, which are about 2 to 4 times higher values than those of the PFETs with spin-coated films. These results revealed that the aligned molecular chain is beneficial for the D-A-type semiconducting copolymer even though the charge transport in the D-A-type semiconducting copolymer is known to be less critical to the degree of disorder in film. Full article
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