Surface engineering of zinc phthalocyanine organic thin-film transistors results in part-per-billion sensitivity towards cannabinoid vapor

Organic thin film transistors are potent sensors, but their charge transport layers (CTL) need to be carefully designed to reach desired analyte responses. Here, the authors show that zinc phthalocyanine sensors with a CTL thickness of 200 Å and low crystallinity are most susceptible to physical alt...

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Bibliographic Details
Main Authors: Zachary J. Comeau, Rosemary R. Cranston, Halynne R. Lamontagne, Cory S. Harris, Adam J. Shuhendler, Benoît H. Lessard
Format: Article
Language:English
Published: Nature Portfolio 2022-12-01
Series:Communications Chemistry
Online Access:https://doi.org/10.1038/s42004-022-00797-y
Description
Summary:Organic thin film transistors are potent sensors, but their charge transport layers (CTL) need to be carefully designed to reach desired analyte responses. Here, the authors show that zinc phthalocyanine sensors with a CTL thickness of 200 Å and low crystallinity are most susceptible to physical alterations upon exposure to analytes, resulting in large electrical changes and a low detection limit of 40 ppb for Δ9-tetrahydrocannbinol vapor.
ISSN:2399-3669