Bio-inspired ultra-high energy efficiency bistable electronic billboard and reader

Weiran Zhang, Xiaojun Wang, Yuyang Wang, Guojian Yang, Chang Gu, Wenxuan Zheng, Yu-Mo Zhang (), Minjie Li and Sean Xiao-An Zhang ()
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Weiran Zhang: Jilin University
Xiaojun Wang: Jilin University
Yuyang Wang: Jilin University
Guojian Yang: Jilin University
Chang Gu: Jilin University
Wenxuan Zheng: Zhuhai College of Jilin University
Yu-Mo Zhang: Jilin University
Minjie Li: Jilin University
Sean Xiao-An Zhang: Jilin University

Nature Communications, 2019, vol. 10, issue 1, 1-8

Abstract: Abstract Bistable display has been a long-awaited goal due to its zero energy cost when maintaining colored or colorless state and electrochromic material has been highly considered as a potential way to achieve bistable display due to its simple structure and possible manipulation. However, it is extremely challenging with insurmountable technical barriers related to traditional electrochromic mechanisms. Herein a prototype for bistable electronic billboard and reader with high energy efficiency is demonstrated with excellent bistability (decay 7% in an hour), reversibility (104 cycles), coloration efficiency (430 cm2 C−1) and very short voltage stimulation time (2 ms) for color switching, which greatly outperforms current products. This is achieved by stabilization of redox molecule via intermolecular ion transfer to the supramolecular bonded colorant and further stabilization of the electrochromic molecules in semi-solid media. This promising approach for ultra-energy-efficient display will promote the development of switching molecules, devices and applications in various fields of driving/navigation/industry as display to save energy.

Date: 2019
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DOI: 10.1038/s41467-019-09556-5

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