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. 2021 Nov 23;14(23):7112. doi: 10.3390/ma14237112

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© 2021 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Effect of dipping time and concentration of PEDOT:PSS on the sensitivity of the flexible temperature-sensitive papers. (a) Variation of the normalized resistance (ΔR/R₀) with respect to temperature for sensing papers prepared with different dipping time; (b) effect of PEDOT:PSS concentration on the sensing properties. Top: Sensitivity of temperature-sensing papers prepared in 0.5, 0.75, 1.0, and 1.5 wt.% PEDOT:PSS. Bottom: Variation of the normalized resistance (ΔR/R₀) with respect to temperature for sensing papers prepared in PEDOT:PSS with different concentration. Temperature range: 20–50 °C.