Electrically tunable infrared optics enabled by flexible ion-permeable conducting polymer-cellulose paper  

作　　者：Chaoyang Kuang Shangzhi Chen Mingna Liao Aiman Rahmanudin Debashree Banerjee Jesper Edberg Klas Tybrandt Dan Zhao Magnus P.Jonsson 

机构地区：[1]Laboratory of Organic Electronics(LOE),Department of Science and Technology(ITN),Linköping University,Campus Norrköping,Norrköping,Sweden [2]Wallenberg Wood Science Center,Linköping University,Campus Norrköping,Norrköping,Sweden [3]RISE Research Institutes of Sweden,Digital Systems,Printed-,Bio-and Organic Electronics,Norrköping,Sweden

出　　处：《npj Flexible Electronics》2024年第1期334-344,共11页npj-柔性电子(英文)

基　　金：support from the Swedish Research Council(VR,2020-00287,2022-00211,2022-06214,2019-04424);the Knut and Alice Wallenberg Foundation,Linköping University and industry through the Wallenberg Wood Science Center;the European Research Council(Consolidator grant,101086683);the Swedish Foundation for International Cooperation in Research and Higher Education(STINT),and the Swedish Government Strategic Research Area in Materials Science on Functional Materials at Linköping University(Faculty Grant SFO-Mat-LiU No.200900971);A.R.acknowledges support from the Marie Sklodowska-Curie Actions Seal of Excellent Fellowship program from the Sweden’s Innovation Agency(Vinnova grant 2021-01668);J.E.acknowledges support from the Digital Cellulose Center(Vinnova).M.P.J.and K.T.are Wallenberg Academy Fellows.

摘　　要：Materials that provide dynamically tunable infrared(IR)response are important for many applications,including active camouflage and thermal management.However,current IR-tunable systems often exhibit limitations in mechanical properties or practicality of their tuning modalities,or require complex and costly fabrication methods.An additional challenge relates to providing compatibility between different spectral channels,such as allowing an object to be reversibly concealed in the IR without making it appear in the visible range.Here,we demonstrate that conducting polymer-cellulose papers,fabricated through a simple and cheap approach,can overcome such challenges.The papers exhibit IR properties that can be electrochemically tuned with large modulation(absolute emissivity modulation of 0.4)while maintaining largely constant response in the visible range.Owing to high ionic and electrical conductivity,the tuning of the top surface can be performed electrochemically from the other side of the paper even at tens of micrometer thicknesses,removing the need for overlaying electrode and electrolyte in the optical beam path.These features enabled a series of electrically tunable IR devices,where we focus on demonstrating dynamic radiative coolers,thermal camouflage,anti-counterfeiting tags,and grayscale IR displays.The conducting polymer-cellulose papers are sustainable,cheap,flexible and mechanically robust,providing a versatile materials platformfor active and adaptive IR optoelectronic devices.

关 键 词：TUNABLE tuning CONDUCTING 

分 类 号：TN2[电子电信—物理电子学]