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Video Speed Switching of Plasmonic Structural Colors with High Contrast and Superior Lifetime

Published version
Peer-reviewed

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Authors

Xiong, Kunli 
Olsson, Oliver 
Svirelis, Justas 
Palasingh, Chonnipa 
Baumberg, Jeremy 

Abstract

Abstract: Reflective displays or “electronic paper” technologies provide a solution to the high energy consumption of emissive displays by simply utilizing ambient light. However, it has proven challenging to develop electronic paper with competitive image quality and video speed capabilities. Here, the first technology that provides video speed switching of structural colors with high contrast over the whole visible is shown. Importantly, this is achieved with a broadband‐absorbing polarization‐insensitive electrochromic polymer instead of liquid crystals, which makes it possible to maintain high reflectivity. It is shown that promoting electrophoretic ion transport (drift motion) improves the switch speed. In combination with new nanostructures that have high surface curvature, this enables video speed switching (20 ms) at high contrast (50% reflectivity change). A detailed analysis of the optical signal during switching shows that the polaron formation starts to obey first order reaction kinetics in the video speed regime. Additionally, the system still operates at ultralow power consumption during video speed switching (<1 mW cm−2) and has negligible power consumption (<1 µW cm−2) in bistability mode. Finally, the fast switching increases device lifetime to at least 107 cycles, an order of magnitude more than state‐of‐the‐art.

Description

Keywords

Research Article, Research Articles, conductive polymers, electronic paper, structural colors, video

Journal Title

Advanced Materials

Conference Name

Journal ISSN

0935-9648
1521-4095

Volume Title

Publisher

Sponsorship
Swedish Foundation for Strategic Research (EM16‐0002)
Horizon 2020 Research and Innovation Programme (883703)