Open this publication in new window or tab >>Show others...
2023 (English)In: Proceedings of the National Academy of Sciences of the United States of America, ISSN 0027-8424, E-ISSN 1091-6490, Vol. 120, no 118, article id e2218380120Article in journal (Refereed) Published
Abstract [en]
The nature of mass transport in plants has recently inspired the development of low-cost and sustainable wood-based electronics. Herein, we report a wood electrochemical transistor (WECT) where all three electrodes are fully made of conductive wood (CW). The CW is prepared using a two-step strategy of wood delignification followed by wood amalgamation with a mixed electron-ion conducting polymer, poly(3,4-ethylenedioxythiophene)–polystyrene sulfonate (PEDOT:PSS). The modified wood has an electrical conductivity of up to 69 Sm−1 induced by the formation of PEDOT:PSS microstructures inside the wood 3D scaffold. CW is then used to fabricate the WECT, which is capable of modulating an electrical current in a porous and thick transistor channel (1 mm) with an on/off ratio of 50. The device shows a good response to gate voltage modulation and exhibits dynamic switching properties similar to those of an organic electrochemical transistor. This wood-based device and the proposed working principle demonstrate the possibility to incorporate active electronic functionality into the wood, suggesting different types of bio-based electronic devices.
Place, publisher, year, edition, pages
Proceedings of the National Academy of Sciences, 2023
Keywords
conductivity, electrochemistry, PEDOT:PSS, transistor, wood
National Category
Polymer Chemistry Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:kth:diva-331691 (URN)10.1073/pnas.2218380120 (DOI)001025817800003 ()37094114 (PubMedID)2-s2.0-85153687393 (Scopus ID)
Note
QC 20230713
2023-07-132023-07-132023-08-15Bibliographically approved