Functionalized soluble triethylsilylethynyl anthradithiophenes (TESADTs) for organic electronic devices

Hsien Cheng Yu, Guhyun Kwon, Sureshraju Vegiraju, Chi Wen Chao, Long Huan Li, Jen Shyang Ni, Peng Yi Huang, Shueh Lin Yau, Yu Chiang Chao, Choongik Kim, Ming Chou Chen

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Four new solution-processable triethylsilylethynyl anthradithiophene-(TESADT) based organic semiconductors, end-capped with phenyl (DP-; 1), thien-2-yl (DT-; 2), thienothien-2-yl (DTT-; 3), and perfluorophenyl (DFP-; 4) groups have been synthesized, characterized, and incorporated in organic thin-film transistors (OTFTs) and organic photovoltaics (OPVs). For the fabrication of solution-processed OTFT, thin films of all four compounds have been fabricated via a solution process of solution-shearing (SS), droplet-pinned crystallization (DPC), and drop-casting (DC). Among various solution-processing methods, solution-shearing produced TFTs the highest electrical performance. Thin films of compound 1 formed via the SS method exhibited p-channel characteristics, with hole mobilities as high as ∼0.034 cm2V-1s-1. The film morphologies and microstructures of these compounds have been characterized by atomic force microscopy and X-ray diffraction to rationalize device performance trends. Furthermore, DP-TESADT (1) and DFP-TESADT (4) has been employed for the fabrication of OPVs. Especially, pseudo-bilayer polymer solar cells based on an underlayer of poly(3-hexylthiophene) (P3HT) doped with 2.4% DP-TESADT and 9.1% DFP-TESADT and an upper layer of [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) achieved power conversion efficiency up to 2.1%.

Original languageEnglish
Pages (from-to)261-269
Number of pages9
JournalDyes and Pigments
Volume126
DOIs
Publication statusPublished - 2016 Mar 1
Externally publishedYes

    Fingerprint

Keywords

  • Anthradithiophene
  • Organic photovoltaics
  • Organic semiconductor
  • Organic thin-film transistor
  • Solution process
  • Solution shearing

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Process Chemistry and Technology

Cite this

Yu, H. C., Kwon, G., Vegiraju, S., Chao, C. W., Li, L. H., Ni, J. S., Huang, P. Y., Yau, S. L., Chao, Y. C., Kim, C., & Chen, M. C. (2016). Functionalized soluble triethylsilylethynyl anthradithiophenes (TESADTs) for organic electronic devices. Dyes and Pigments, 126, 261-269. https://doi.org/10.1016/j.dyepig.2015.12.008