Enhancing the solubility of n-type diketopyrrolopyrrole-dicyanovinyl molecules with hybrid siloxane group for solution-processable organic field-effect transistor

S. P. Prakoso, G. T. Ciou, H. Y. Lin, W. C. Peng, J. H. Sie, Y. F. Huang, Y. H. Gan, Y. J. Ke, C. Y. Wu, C. L. Wang*, Y. T. Tao

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

Diketopyrrolopyrrole (DPP) organic dye is well-known to have poor solubility in most common organic solvents. In general, flexible alkyl chain is used to enhance the solubility of conjugated small molecules by disrupting the attraction between molecules. In this study, we have integrated hybrid organic-inorganic siloxane group as a solubilizing agent on DPP molecule carrying dicyanovinyl (DCV) as an electron-withdrawing group. UV-Vis absorption spectra were collected to evaluate the optical properties of these compounds. The electrical performances of these organic semiconductors were examined by fabricating into transistor device with them as active channel layer in the bottom gate staggered configuration. Furthermore, the molecular packing in thin films from this series was investigated by 2D grazing incident x-ray diffraction (GIXD) in relationship with device performances. It is shown that the siloxane group at the side chain of DPP effectively enhances the solubility of this molecule compared to DPP molecule with branched alkyl chain from previous study. A better solubility allows for device fabrication by solution process yet improves crystallinity of organic films and thus its electrical device performance.

Original languageEnglish
Title of host publicationProceedings of the 4th International Symposium on Current Progress in Mathematics and Sciences, ISCPMS 2018
EditorsTerry Mart, Djoko Triyono, Ivandini T. Anggraningrum
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735419155
DOIs
StatePublished - 4 Nov 2019
Event4th International Symposium on Current Progress in Mathematics and Sciences 2018, ISCPMS 2018 - Depok, Indonesia
Duration: 30 Oct 201831 Oct 2018

Publication series

NameAIP Conference Proceedings
Volume2168
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference4th International Symposium on Current Progress in Mathematics and Sciences 2018, ISCPMS 2018
CountryIndonesia
CityDepok
Period30/10/1831/10/18

Keywords

  • Device fabrication
  • Diketopyrrolopyrrole (DPP)
  • organic electronics

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