A high-conductivity n-type polymeric ink for printed electronics

Chi-Yuan Yang, Marc-Antoine Stoeckel, Tero-Petri Ruoko, Han-Yan Wu, Xianjie Liu, Nagesh B. Kolhe, Ziang Wu, Yuttapoom Puttisong, Chiara Musumeci, Matteo Massetti, Hengda Sun, Kai Xu, Deyu Tu, Weimin M. Chen, Han Young Woo, Mats Fahlman, Samson A. Jenekhe, Magnus Berggren and Simone Fabiano ()
Additional contact information
Chi-Yuan Yang: Linköping University
Marc-Antoine Stoeckel: Linköping University
Tero-Petri Ruoko: Linköping University
Han-Yan Wu: Linköping University
Xianjie Liu: Linköping University
Nagesh B. Kolhe: University of Washington
Ziang Wu: Korea University
Yuttapoom Puttisong: Linköping University
Chiara Musumeci: Linköping University
Matteo Massetti: Linköping University
Hengda Sun: Linköping University
Kai Xu: Linköping University
Deyu Tu: Linköping University
Weimin M. Chen: Linköping University
Han Young Woo: Korea University
Mats Fahlman: Linköping University
Samson A. Jenekhe: University of Washington
Magnus Berggren: Linköping University
Simone Fabiano: Linköping University

Nature Communications, 2021, vol. 12, issue 1, 1-8

Abstract: Abstract Conducting polymers, such as the p-doped poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS), have enabled the development of an array of opto- and bio-electronics devices. However, to make these technologies truly pervasive, stable and easily processable, n-doped conducting polymers are also needed. Despite major efforts, no n-type equivalents to the benchmark PEDOT:PSS exist to date. Here, we report on the development of poly(benzimidazobenzophenanthroline):poly(ethyleneimine) (BBL:PEI) as an ethanol-based n-type conductive ink. BBL:PEI thin films yield an n-type electrical conductivity reaching 8 S cm−1, along with excellent thermal, ambient, and solvent stability. This printable n-type mixed ion-electron conductor has several technological implications for realizing high-performance organic electronic devices, as demonstrated for organic thermoelectric generators with record high power output and n-type organic electrochemical transistors with a unique depletion mode of operation. BBL:PEI inks hold promise for the development of next-generation bioelectronics and wearable devices, in particular targeting novel functionality, efficiency, and power performance.

Date: 2021
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DOI: 10.1038/s41467-021-22528-y

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