Breath figure–derived porous semiconducting films for organic electronics

Xinan Zhang, Binghao Wang, Lizhen Huang, Wei Huang, Zhi Wang, Weigang Zhu, Yao Chen, Yan Li Mao, Antonio Facchetti, Tobin J. Marks

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Porous semiconductor film morphologies facilitate fluid diffusion and mass transport into the charge-carrying layers of diverse electronic devices. Here, we report the nature-inspired fabrication of several porous organic semiconductor-insulator blend films [semiconductor: P3HT (p-type polymer), C8BTBT (p-type small-molecule), and N2200 (n-type polymer); insulator: PS] by a breath figure patterning method and their broad and general applicability in organic thin-film transistors (OTFTs), gas sensors, organic electrochemical transistors (OECTs), and chemically doped conducting films. Detailed morphological analysis of these films demonstrates formation of textured layers with uniform nanopores reaching the bottom substrate with an unchanged solid-state packing structure. Device data gathered with both porous and dense control semiconductor films demonstrate that the former films are efficient TFT semiconductors but with added advantage of enhanced sensitivity to gases (e.g., 48.2%/ppm for NO2 using P3HT/PS), faster switching speeds (4.7 s for P3HT/PS OECTs), and more efficient molecular doping (conductivity, 0.13 S/m for N2200/PS).

Original languageEnglish
JournalScience Advances
Volume6
Issue number13
DOIs
Publication statusPublished - 2020

ASJC Scopus subject areas

  • General

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    Zhang, X., Wang, B., Huang, L., Huang, W., Wang, Z., Zhu, W., Chen, Y., Mao, Y. L., Facchetti, A., & Marks, T. J. (2020). Breath figure–derived porous semiconducting films for organic electronics. Science Advances, 6(13). https://doi.org/10.1126/sciadv.aaz1042